Microsoft Xml Parser Unsupported

Apr 17, 2018 With Microsoft XML Core Services (MSXML), formerly known as the Microsoft XML Parser, customers can build XML-based applications that follow the World Wide Web Consortium (W3C) XML standards. MSXML is a Component Object Model (COM) implementation of the W3C DOM model.

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Security Bulletin

Vulnerabilities in Microsoft XML Core Services Could Allow Remote Code Execution (2756145)

Published: January 08, 2013 | Updated: December 16, 2013

Version: 1.2

General Information

Executive Summary

This security update resolves two privately reported vulnerabilities in Microsoft XML Core Services. The vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker would have no way to force users to visit such a website. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes the user to the attacker's website.

This security update is rated Critical for Microsoft XML Core Services 3.0, Microsoft XML Core Services 4.0, and Microsoft XML Core Services 6.0 on all affected editions of Windows XP, Windows Vista, Windows 7, Windows 8, and Windows RT; Critical for Microsoft XML Core Services 5.0 when installed with all supported editions of Microsoft Office 2003, Microsoft Office 2007, Microsoft Word Viewer, Microsoft Office Compatibility Pack, Microsoft Expression Web, Microsoft SharePoint Server 2007, and Microsoft Groove Server 2007; Moderate for Microsoft XML Core Services 3.0, 4.0, and 6.0 on all affected editions of Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, and Windows Server 2012. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerabilities by modifying the way that Microsoft XML Core Services parses XML content. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

Recommendation. Most customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.

For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service.

See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.

Known Issues.Microsoft Knowledge Base Article 2756145 documents the currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues. When currently known issues and recommended solutions pertain only to specific releases of this software, this article provides links to further articles.

Affected and Non-Affected Software

The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see Microsoft Support Lifecycle.

Affected Software

Operating System	Component	Maximum Security Impact	Aggregate Severity Rating	Updates Replaced
Windows XP Service Pack 3
Windows XP Service Pack 3	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=1e2738b9-d3c2-4dfe-8a79-335d5feee55b) (KB2758694)	Remote Code Execution	Critical	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows XP Service Pack 3	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=137cc5ee-abf0-4a10-b1c4-d464331cbcfd) (KB2757638)	Remote Code Execution	Critical	None
Windows XP Professional x64 Edition Service Pack 2
Windows XP Professional x64 Edition Service Pack 2	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=d147f865-6a56-4db2-8d78-14f2bee6da18) (KB2757638)	Remote Code Execution	Critical	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows XP Professional x64 Edition Service Pack 2	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Critical	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows XP Professional x64 Edition Service Pack 2	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=0b13a83c-1e51-4604-a09d-afb2e25646f9) (KB2758696)	Remote Code Execution	Critical	KB2721693 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2003 Service Pack 2
Windows Server 2003 Service Pack 2	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=1e2738b9-d3c2-4dfe-8a79-335d5feee55b) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2003 Service Pack 2	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=6a12de5f-de80-48e4-8276-6c420f5a2948) (KB2758696)	Remote Code Execution	Moderate	KB2721693 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=29985fdc-8aba-44b2-9420-970ca475052e) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2003 x64 Edition Service Pack 2	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2003 x64 Edition Service Pack 2	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=0b13a83c-1e51-4604-a09d-afb2e25646f9) (KB2758696)	Remote Code Execution	Moderate	KB2721693 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2003 with SP2 for Itanium-based Systems
Windows Server 2003 with SP2 for Itanium-based Systems	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=bca95077-a28f-406c-9fe4-51dbcf6adee8) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2003 with SP2 for Itanium-based Systems	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=4719776a-5ff0-491a-934e-99220d8ac3a3) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2003 with SP2 for Itanium-based Systems	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=fb834cf7-d1fe-4291-8a0d-c866fdbdf0e6) (KB2758696)	Remote Code Execution	Moderate	KB2721693 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Vista Service Pack 2
Windows Vista Service Pack 2	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=1e2738b9-d3c2-4dfe-8a79-335d5feee55b) (KB2758694)	Remote Code Execution	Critical	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Vista Service Pack 2	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=d477235d-60f4-420d-8161-82194b4e62e7) (KB2757638)	Remote Code Execution	Critical	None
Windows Vista x64 Edition Service Pack 2
Windows Vista x64 Edition Service Pack 2	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=873eba5d-5a8f-410e-bad8-e9d538acf1b3) (KB2757638)	Remote Code Execution	Critical	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Vista x64 Edition Service Pack 2	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Critical	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Vista x64 Edition Service Pack 2	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=873eba5d-5a8f-410e-bad8-e9d538acf1b3) (KB2757638)	Remote Code Execution	Critical	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=1e2738b9-d3c2-4dfe-8a79-335d5feee55b) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 for 32-bit Systems Service Pack 2	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=e6439fef-e5e7-479b-8fc4-daacf3a39f3a) (KB2757638)	Remote Code Execution	Moderate	None
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=1511377b-0adc-455f-8caa-f3498832c735) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 for x64-based Systems Service Pack 2	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 for x64-based Systems Service Pack 2	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=1511377b-0adc-455f-8caa-f3498832c735) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems Service Pack 2	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=c11ec9cd-1a85-4514-a1b9-9da5cdd0926b) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 for Itanium-based Systems Service Pack 2	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=4719776a-5ff0-491a-934e-99220d8ac3a3) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 for Itanium-based Systems Service Pack 2	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=c11ec9cd-1a85-4514-a1b9-9da5cdd0926b) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 7 for 32-bit Systems
Windows 7 for 32-bit Systems	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=1e2738b9-d3c2-4dfe-8a79-335d5feee55b) (KB2758694)	Remote Code Execution	Critical	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 7 for 32-bit Systems	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=3a160fc4-1bf0-4db2-aa8d-6ba4f07d196b) (KB2757638)	Remote Code Execution	Critical	None
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for 32-bit Systems Service Pack 1	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=1e2738b9-d3c2-4dfe-8a79-335d5feee55b) (KB2758694)	Remote Code Execution	Critical	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 7 for 32-bit Systems Service Pack 1	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=3a160fc4-1bf0-4db2-aa8d-6ba4f07d196b) (KB2757638)	Remote Code Execution	Critical	None
Windows 7 for x64-based Systems
Windows 7 for x64-based Systems	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=4b442601-2808-4192-aa7d-b6476668cd23) (KB2757638)	Remote Code Execution	Critical	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 7 for x64-based Systems	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Critical	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 7 for x64-based Systems	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=4b442601-2808-4192-aa7d-b6476668cd23) (KB2757638)	Remote Code Execution	Critical	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 7 for x64-based Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=4b442601-2808-4192-aa7d-b6476668cd23) (KB2757638)	Remote Code Execution	Critical	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 7 for x64-based Systems Service Pack 1	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Critical	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 7 for x64-based Systems Service Pack 1	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=4b442601-2808-4192-aa7d-b6476668cd23) (KB2757638)	Remote Code Execution	Critical	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=cd979acf-ed95-4d86-a046-ca7dc53523a3) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=cd979acf-ed95-4d86-a046-ca7dc53523a3) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=cd979acf-ed95-4d86-a046-ca7dc53523a3) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems Service Pack 1	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems Service Pack 1	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=cd979acf-ed95-4d86-a046-ca7dc53523a3) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for Itanium-based Systems
Windows Server 2008 R2 for Itanium-based Systems	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=e4dfbf88-0e7f-43ca-affe-5d8ddea8657e) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for Itanium-based Systems	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=4719776a-5ff0-491a-934e-99220d8ac3a3) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for Itanium-based Systems	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=e4dfbf88-0e7f-43ca-affe-5d8ddea8657e) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=e4dfbf88-0e7f-43ca-affe-5d8ddea8657e) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=4719776a-5ff0-491a-934e-99220d8ac3a3) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=e4dfbf88-0e7f-43ca-affe-5d8ddea8657e) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 8 for 32-bit Systems
Windows 8 for 32-bit Systems	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=1e2738b9-d3c2-4dfe-8a79-335d5feee55b) (KB2758694)	Remote Code Execution	Critical	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 8 for 32-bit Systems	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=e19d1373-a3f3-4f60-9142-c2484726aac8) (KB2757638)	Remote Code Execution	Critical	None
Windows 8 for 64-bit Systems
Windows 8 for 64-bit Systems	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=c669190d-964c-42d3-b09d-40a397ae3a9c) (KB2757638)	Remote Code Execution	Critical	None
Windows 8 for 64-bit Systems	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Critical	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows 8 for 64-bit Systems	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=c669190d-964c-42d3-b09d-40a397ae3a9c) (KB2757638)	Remote Code Execution	Critical	None
Windows Server 2012
Windows Server 2012	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=f7e434e5-1ce8-4754-b9b4-07f3d84e0528) (KB2757638)	Remote Code Execution	Moderate	None
Windows Server 2012	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2012	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=f7e434e5-1ce8-4754-b9b4-07f3d84e0528) (KB2757638)	Remote Code Execution	Moderate	None
Windows RT
Windows RT	Microsoft XML Core Services 4.0^[1](KB2758694)	Remote Code Execution	Critical	None
Windows RT	Microsoft XML Core Services 6.0^[1](KB2757638)	Remote Code Execution	Critical	None
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=1e2738b9-d3c2-4dfe-8a79-335d5feee55b) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=e6439fef-e5e7-479b-8fc4-daacf3a39f3a) (KB2757638)	Remote Code Execution	Moderate	None
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=1511377b-0adc-455f-8caa-f3498832c735) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=1511377b-0adc-455f-8caa-f3498832c735) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems (Server Core installation)
Windows Server 2008 R2 for x64-based Systems (Server Core installation)	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=cd979acf-ed95-4d86-a046-ca7dc53523a3) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems (Server Core installation)	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems (Server Core installation)	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=cd979acf-ed95-4d86-a046-ca7dc53523a3) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=cd979acf-ed95-4d86-a046-ca7dc53523a3) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=cd979acf-ed95-4d86-a046-ca7dc53523a3) (KB2757638)	Remote Code Execution	Moderate	KB2719985 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2012 (Server Core installation)
Windows Server 2012 (Server Core installation)	[Microsoft XML Core Services 3.0](http://www.microsoft.com/downloads/details.aspx?familyid=f7e434e5-1ce8-4754-b9b4-07f3d84e0528) (KB2757638)	Remote Code Execution	Moderate	None
Windows Server 2012 (Server Core installation)	[Microsoft XML Core Services 4.0](http://www.microsoft.com/downloads/details.aspx?familyid=7dabf372-4b31-4c9e-a660-4e0f4a65db04) (KB2758694)	Remote Code Execution	Moderate	KB2721691 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Windows Server 2012 (Server Core installation)	[Microsoft XML Core Services 6.0](http://www.microsoft.com/downloads/details.aspx?familyid=f7e434e5-1ce8-4754-b9b4-07f3d84e0528) (KB2757638)	Remote Code Execution	Moderate	None

^[1]Windows RT security updates are provided via [Windows Update](http://go.microsoft.com/fwlink/?linkid=21130).

Microsoft Office Suites and Software

Office Software	Component	Maximum Security Impact	Aggregate Severity Rating	Updates Replaced
Microsoft Office Suites and Components
Microsoft Office 2003 Service Pack 3	[Microsoft XML Core Services 5.0](http://www.microsoft.com/downloads/details.aspx?familyid=d108d56c-f9fb-4823-b38e-3d2f838592de) (KB2760574)	Remote Code Execution	Critical	KB2687627 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Microsoft Office 2007 Service Pack 2	[Microsoft XML Core Services 5.0](http://www.microsoft.com/downloads/details.aspx?familyid=7ba27dc9-4e9c-4ab5-867e-888c01716e11) (KB2687499)	Remote Code Execution	Critical	KB2596856 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Microsoft Office 2007 Service Pack 3	[Microsoft XML Core Services 5.0](http://www.microsoft.com/downloads/details.aspx?familyid=7ba27dc9-4e9c-4ab5-867e-888c01716e11) (KB2687499)	Remote Code Execution	Critical	KB2596856 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Other Microsoft Office Software
Microsoft Word Viewer	[Microsoft XML Core Services 5.0](http://www.microsoft.com/downloads/details.aspx?familyid=7ba27dc9-4e9c-4ab5-867e-888c01716e11) (KB2687499)	Remote Code Execution	Critical	KB2596856 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Microsoft Office Compatibility Pack Service Pack 2	[Microsoft XML Core Services 5.0](http://www.microsoft.com/downloads/details.aspx?familyid=7ba27dc9-4e9c-4ab5-867e-888c01716e11) (KB2687499)	Remote Code Execution	Critical	KB2596856 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)
Microsoft Office Compatibility Pack Service Pack 3	[Microsoft XML Core Services 5.0](http://www.microsoft.com/downloads/details.aspx?familyid=7ba27dc9-4e9c-4ab5-867e-888c01716e11) (KB2687499)	Remote Code Execution	Critical	KB2596856 in [MS12-043](http://go.microsoft.com/fwlink/?linkid=254824)

MicrosoftDeveloper Tools andSoftware

Software	Component	Maximum Security Impact	Aggregate Severity Rating	Updates Replaced
Microsoft Expression Web Service Pack 1	Microsoft XML Core Services 5.0 (KB2687499)	Remote Code Execution	Critical	KB2596856 in MS12-043
Microsoft Expression Web 2	Microsoft XML Core Services 5.0 (KB2687499)	Remote Code Execution	Critical	KB2596856 in MS12-043

Microsoft Server Software

Software	Component	Maximum Security Impact	Aggregate Severity Rating	Updates Replaced
Microsoft SharePoint Server 2007 Service Pack 2 (32-bit editions)	Microsoft XML Core Services 5.0 (KB2687497)	Remote Code Execution	Critical	Original KB2687497 in MS12-043
Microsoft SharePoint Server 2007 Service Pack 2 (64-bit editions)	Microsoft XML Core Services 5.0 (KB2687497)	Remote Code Execution	Critical	Original KB2687497 in MS12-043
Microsoft SharePoint Server 2007 Service Pack 3 (32-bit editions)	Microsoft XML Core Services 5.0 (KB2687497)	Remote Code Execution	Critical	Original KB2687497 in MS12-043
Microsoft SharePoint Server 2007 Service Pack 3 (64-bit editions)	Microsoft XML Core Services 5.0 (KB2687497)	Remote Code Execution	Critical	Original KB2687497 in MS12-043
Microsoft Groove Server 2007 Service Pack 2	Microsoft XML Core Services 5.0 (KB2687497)	Remote Code Execution	Critical	Original KB2687497 in MS12-043
Microsoft Groove Server 2007 Service Pack 3	Microsoft XML Core Services 5.0 (KB2687497)	Remote Code Execution	Critical	Original KB2687497 in MS12-043

Non-Affected Software

Operating System
Microsoft MSXML Core Services 3.0 on Windows XP Service Pack 3
Microsoft MSXML Core Services 3.0 on Windows Server 2003 Service Pack 2
Microsoft MSXML Core Services 3.0 on Windows Vista Service Pack 2
Microsoft MSXML Core Services 3.0 on Windows Server 2008 for 32-bit Systems Service Pack 2
Microsoft MSXML Core Services 3.0 on Windows 7 for 32-bit Systems
Microsoft MSXML Core Services 3.0 on Windows 7 for 32-bit Systems Service Pack 1
Microsoft MSXML Core Services 3.0 on Windows 8 for 32-bit Systems
Microsoft MSXML Core Services 3.0 on Windows RT
Software
Microsoft Office 2010 (32-bit editions)
Microsoft Office 2010 Service Pack 1 (32-bit editions)
Microsoft Office 2010 (64-bit editions)
Microsoft Office 2010 Service Pack 1 (64-bit editions)
Microsoft SharePoint Server 2010
Microsoft SharePoint Server 2010 Service Pack 1
Microsoft Groove 2007 Service Pack 2
Microsoft Groove 2007 Service Pack 3
Microsoft Groove Server 2010
Microsoft Visio 2010 (32-bit editions)
Microsoft Visio 2010 Service Pack 1 (32-bit editions)
Microsoft Visio 2010 (64-bit editions)
Microsoft Visio 2010 Service Pack 1 (64-bit editions)
Microsoft Visio Viewer 2010 and Microsoft Visio Viewer 2010 Service Pack 1
Microsoft Office Web Apps 2010
Microsoft Expression Web 3
Microsoft Expression Web 4
Microsoft Excel Viewer
Microsoft Visio Viewer 2010
Microsoft Visio Viewer 2010 Service Pack 1
Microsoft Works 9
Microsoft Office 2008 for Mac
Microsoft Office for Mac 2011

Frequently Asked Questions (FAQ) Related to This Security Update

Is security update KB2687497 for Microsoft SharePoint Server 2007 and Microsoft Groove Server 2007 being rereleased as part of MS13-002?
No. The security update for Microsoft SharePoint Server 2007 and Microsoft Groove Server 2007 that was offered in MS12-043 is a new update package. If you have already installed KB2687497, you need to install the security update again.

How is the original KB2687497 update in MS12-043 related to the KB2687497 update in this bulletin, MS13-002?
The original KB2687497 update in MS12-043 addresses the vulnerabilities described in MS12-043. The KB2687497 update in MS13-002 replaces the original update and also addresses the vulnerabilities described in this bulletin, MS13-002.

I have the KB2687497 update already installed, but Microsoft Update is offering the update to me again. Do I need to install it?
Most likely you have the original KB2687497 update installed, in which case you need to install the new KB2687497 update. Customers should apply all updates offered for the version of Microsoft Office Server software running on their systems.

Where are the file information details?
Refer to the reference tables in the Security Update Deployment section for the location of the file information details.

Whereare the hashes of the securityupdates?
The SHA1 and SHA2 hashes of the security updates can be used to verify the authenticity of downloaded security update packages. For the hash information pertaining to this update, see Microsoft Knowledge Base Article 2756145.

What version of Microsoft XML Core Services is installed on my system?
Some versions of Microsoft XML Core Services are included with Microsoft Windows; others are installed with non-operating system software from Microsoft or third-party providers. Some are also available as separate downloads. The following table shows which versions of Microsoft XML Core Services are included with Microsoft Windows and which are installed with the installation of additional Microsoft or third-party software.

Operating System	MSXML 3.0 and MSXML 6.0	MSXML 4.0 and MSXML 5.0
Windows XP	Shipped with operating system	Installed with additional software
Windows Server 2003	Shipped with operating system	Installed with additional software
Windows Vista	Shipped with operating system	Installed with additional software
Windows Server 2008	Shipped with operating system	Installed with additional software
Windows 7	Shipped with operating system	Installed with additional software
Windows Server 2008 R2	Shipped with operating system	Installed with additional software
Windows 8	Shipped with operating system	Installed with additional software
Windows Server 2012	Shipped with operating system	Installed with additional software

Note Depending on which versions of Microsoft XML Core Services are installed on your system, you may be offered more than one security update with this security bulletin. Also note that only supported versions of Microsoft XML Core Services are offered an update. For more information on which versions are supported by Microsoft, see Microsoft Knowledge Base Article 269238.

What is Microsoft XML Core Services (MSXML)?
Microsoft XML Core Services (MSXML) allows customers who use JScript, Visual Basic Scripting Edition (VBScript), and Microsoft Visual Studio 6.0 to develop XML-based applications that provide interoperability with other applications that adhere to the XML 1.0 standard. For more information, see the MSDN article, MSXML.

Why does this update address several reported security vulnerabilities?
This update contains support for several vulnerabilities because the modifications that are required to address these issues are located in related files.

I am using an older release of the software discussed in this security bulletin. What should I do?
The affected software listed in this bulletin have been tested to determine which releases are affected. Other releases are past their support life cycle. For more information about the product lifecycle, see the Microsoft Support Lifecycle website.

It should be a priority for customers who have older releases of the software to migrate to supported releases to prevent potential exposure to vulnerabilities. To determine the support lifecycle for your software release, see Select a Product for Lifecycle Information. For more information about service packs for these software releases, see Service Pack Lifecycle Support Policy.

Customers who require custom support for older software must contact their Microsoft account team representative, their Technical Account Manager, or the appropriate Microsoft partner representative for custom support options. Customers without an Alliance, Premier, or Authorized Contract can contact their local Microsoft sales office. For contact information, see the Microsoft Worldwide Information website, select the country in the Contact Information list, and then click Go to see a list of telephone numbers. When you call, ask to speak with the local Premier Support sales manager. For more information, see the Microsoft Support Lifecycle Policy FAQ.

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

The following severity ratings assume the potential maximum impact of the vulnerability. For information regarding the likelihood, within 30 days of this security bulletin's release, of the exploitability of the vulnerability in relation to its severity rating and security impact, please see the Exploitability Index in the January bulletin summary. For more information, see Microsoft Exploitability Index.

Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected Software	MSXML Integer Truncation Vulnerability - CVE-2013-0006	MSXML XSLT Vulnerability - CVE-2013-0007	Aggregate Severity Rating
Windows XP Service Pack 3
Microsoft XML Core Services 4.0 when installed on Windows XP Service Pack 3	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 on Windows XP Service Pack 3	Not applicable	Critical Remote Code Execution	Critical
Windows XP Professional x64 Edition Service Pack 2
Microsoft XML Core Services 3.0 on Windows XP Professional x64 Edition Service Pack 2	Critical Remote Code Execution	Not applicable	Critical
Microsoft XML Core Services 4.0 when installed on Windows XP Professional x64 Edition Service Pack 2	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 on Windows XP Professional x64 Edition Service Pack 2	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Windows Server 2003 Service Pack 2
Microsoft XML Core Services 4.0 when installed on Windows Server 2003 Service Pack 2	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2003 Service Pack 2	Not applicable	Moderate Remote Code Execution	Moderate
Windows Server 2003 x64 Edition Service Pack 2
Microsoft XML Core Services 3.0 on Windows Server 2003 x64 Edition Service Pack 2	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2003 x64 Edition Service Pack 2	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2003 x64 Edition Service Pack 2	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows Server 2003 with SP2 for Itanium-based Systems
Microsoft XML Core Services 3.0 on Windows Server 2003 with SP2 for Itanium-based Systems	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2003 with SP2 for Itanium-based Systems	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2003 with SP2 for Itanium-based Systems	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows Vista Service Pack 2
Microsoft XML Core Services 4.0 when installed on Windows Vista Service Pack 2	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 on Windows Vista Service Pack 2	Not applicable	Critical Remote Code Execution	Critical
Windows Vista x64 Edition Service Pack 2
Microsoft XML Core Services 3.0 on Windows Vista x64 Edition Service Pack 2	Critical Remote Code Execution	Not applicable	Critical
Microsoft XML Core Services 4.0 when installed on Windows Vista x64 Edition Service Pack 2	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 on Windows Vista x64 Edition Service Pack 2	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Windows Server 2008 for 32-bit Systems Service Pack 2
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 for 32-bit Systems Service Pack 2	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2008 for 32-bit Systems Service Pack 2	Not applicable	Moderate Remote Code Execution	Moderate
Windows Server 2008 for x64-based Systems Service Pack 2
Microsoft XML Core Services 3.0 on Windows Server 2008 for x64-based Systems Service Pack 2	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 for x64-based Systems Service Pack 2	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2008 for x64-based Systems Service Pack 2	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows Server 2008 for Itanium-based Systems Service Pack 2
Microsoft XML Core Services 3.0 on Windows Server 2008 for Itanium-based Systems Service Pack 2	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 for Itanium-based Systems Service Pack 2	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2008 for Itanium-based Systems Service Pack 2	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows 7 for 32-bit Systems
Microsoft XML Core Services 4.0 when installed on Windows 7 for 32-bit Systems	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 on Windows 7 for 32-bit Systems	Not applicable	Critical Remote Code Execution	Critical
Windows 7 for 32-bit Systems Service Pack 1
Microsoft XML Core Services 4.0 when installed on Windows 7 for 32-bit Systems Service Pack 1	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 on Windows 7 for 32-bit Systems Service Pack 1	Not applicable	Critical Remote Code Execution	Critical
Windows 7 for x64-based Systems
Microsoft XML Core Services 3.0 on Windows 7 for x64-based Systems	Critical Remote Code Execution	Not applicable	Critical
Microsoft XML Core Services 4.0 when installed on Windows 7 for x64-based Systems	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 on Windows 7 for x64-based Systems	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Windows 7 for x64-based Systems Service Pack 1
Microsoft XML Core Services 3.0 on Windows 7 for x64-based Systems Service Pack 1	Critical Remote Code Execution	Not applicable	Critical
Microsoft XML Core Services 4.0 when installed on Windows 7 for x64-based Systems Service Pack 1	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 on Windows 7 for x64-based Systems Service Pack 1	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Windows Server 2008 R2 for x64-based Systems
Microsoft XML Core Services 3.0 on Windows Server 2008 R2 for x64-based Systems	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 R2 for x64-based Systems	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2008 R2 for x64-based Systems	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Microsoft XML Core Services 3.0 on Windows Server 2008 R2 for x64-based Systems Service Pack 1	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 R2 for x64-based Systems Service Pack 1	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2008 R2 for x64-based Systems Service Pack 1	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows Server 2008 R2 for Itanium-based Systems
Microsoft XML Core Services 3.0 on Windows Server 2008 R2 for Itanium-based Systems	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 R2 for Itanium-based Systems	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2008 R2 for Itanium-based Systems	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Microsoft XML Core Services 3.0 on Windows Server 2008 R2 for Itanium-based Systems Service Pack 1	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 R2 for Itanium-based Systems Service Pack 1	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2008 R2 for Itanium-based Systems Service Pack 1	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows 8 for 32-bit Systems
Microsoft XML Core Services 4.0 when installed on Windows 8 for 32-bit Systems	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 when installed on Windows 8 for 32-bit Systems	Not applicable	Critical Remote Code Execution	Critical
Windows 8 for 64-bit Systems
Microsoft XML Core Services 3.0 when installed on Windows 8 for 64-bit Systems	Critical Remote Code Execution	Not applicable	Critical
Microsoft XML Core Services 4.0 when installed on Windows 8 for 64-bit Systems	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 when installed on Windows 8 for 64-bit Systems	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Windows Server 2012
Microsoft XML Core Services 3.0 when installed on Windows Server 2012	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2012	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 when installed on Windows Server 2012	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows RT
Microsoft XML Core Services 4.0 when installed on Windows RT	Not applicable	Critical Remote Code Execution	Critical
Microsoft XML Core Services 6.0 when installed on Windows RT	Not applicable	Critical Remote Code Execution	Critical
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 on Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)	Not applicable	Moderate Remote Code Execution	Moderate
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Microsoft XML Core Services 3.0 when installed on Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 when installed on Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows Server 2008 R2 for x64-based Systems (Server Core installation)
Microsoft XML Core Services 3.0 when installed on Windows Server 2008 R2 for x64-based Systems (Server Core installation)	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 R2 for x64-based Systems (Server Core installation)	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 when installed on Windows Server 2008 R2 for x64-based Systems (Server Core installation)	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Microsoft XML Core Services 3.0 when installed on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 when installed on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Windows Server 2012 (Server Core installation)
Microsoft XML Core Services 3.0 when installed on Windows Server 2012 (Server Core installation)	Moderate Remote Code Execution	Not applicable	Moderate
Microsoft XML Core Services 4.0 when installed on Windows Server 2012 (Server Core installation)	Not applicable	Moderate Remote Code Execution	Moderate
Microsoft XML Core Services 6.0 when installed on Windows Server 2012 (Server Core installation)	Moderate Remote Code Execution	Moderate Remote Code Execution	Moderate
Microsoft Office
Microsoft XML Core Services 5.0 when installed with Microsoft Office 2003 Service Pack 3	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft XML Core Services 5.0 when installed with Microsoft Office 2007 Service Pack 2	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft XML Core Services 5.0 when installed with Microsoft Office 2007 Service Pack 3	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Other Microsoft Office Software
Microsoft XML Core Services 5.0 when installed with Microsoft Word Viewer	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft XML Core Services 5.0 when installed with Microsoft Office Compatibility Pack Service Pack 2	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft XML Core Services 5.0 when installed with Microsoft Office Compatibility Pack Service Pack 3	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft Developer Tools and Software
Microsoft XML Core Services 5.0 when installed with Microsoft Expression Web Service Pack 1	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft XML Core Services 5.0 when installed with Microsoft Expression Web 2	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft Server Software
Microsoft XML Core Services 5.0 when installed with Microsoft SharePoint Server 2007 Service Pack 2 (32-bit editions)	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft XML Core Services 5.0 when installed with Microsoft SharePoint Server 2007 Service Pack 2 (64-bit editions)	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft XML Core Services 5.0 when installed with Microsoft SharePoint Server 2007 Service Pack 3 (32-bit editions)	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft XML Core Services 5.0 when installed with Microsoft SharePoint Server 2007 Service Pack 3 (64-bit editions)	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft XML Core Services 5.0 when installed with Microsoft Groove Server 2007 Service Pack 2	Critical Remote Code Execution	Critical Remote Code Execution	Critical
Microsoft XML Core Services 5.0 when installed with Microsoft Groove Server 2007 Service Pack 3	Critical Remote Code Execution	Critical Remote Code Execution	Critical

MSXML Integer Truncation Vulnerability - CVE-2013-0006

A remote code execution vulnerability exists in the way that Microsoft Windows parses XML content. The vulnerability may corrupt memory in such a way that an attacker could execute arbitrary code in the context of the logged-on user.

To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2013-0006.

Mitigating Factors for MSXML Integer Truncation Vulnerability - CVE-2013-0006

Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors may be helpful in your situation

In a web-based attack scenario, an attacker would have to host a website that contains a specially crafted webpage that is used to exploit this vulnerability. An attacker would have no way to force users to visit such a website. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes the user to the attacker's website.
An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
By default, Internet Explorer on Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, and Windows Server 2012 runs in a restricted mode that is known as Enhanced Security Configuration. This mode mitigates this vulnerability.

Workarounds for MSXML Integer Truncation Vulnerability - CVE-2013-0006

Workaround refers to a setting or configuration change that does not correct the underlying vulnerability but would help block known attack vectors before you apply the update. Microsoft has tested the following workarounds and states in the discussion whether a workaround reduces functionality:

Restrict access to msxml3.dll
For Windows XP Service Pack 3:
1. Run the following command from an elevated command prompt:
  cacls %windir%system32msxml3.dll /E /P everyone:N
2. Restart the system
Impact of workaround. Websites that use XML may no longer display or function correctly.
How to undo the workaround.
1. Run the following command from an elevated administrator command prompt:
  cacls %windir%system32msxml3.dll /E /R everyone
2. Restart the system.
For all supported 32-bit editions of Windows Vista and Windows Server 2008:
1. Run the following commands from an elevated administrator command prompt:
1. Restart the system.
Impact of workaround. Websites that use XML may no longer display or function correctly.
How to undo the workaround.
1. Run the following command from an elevated administrator command prompt:
  icacls %windir%system32 /restore %TEMP%MSXML3_ACL.TXT
2. Restart the system.
Restrict access to msxml6.dll
For Windows XP Service Pack 3:
1. Run the following command from an elevated administrator command prompt:
  cacls %windir%system32msxml6.dll /E /P everyone:N
2. Restart the system.
Impact of workaround. Websites that use XML may no longer display or function correctly.
How to undo the workaround.
1. Run the following command from an elevated administrator command prompt:
  cacls %windir%system32msxml6.dll /E /R everyone
2. Restart the system.
For all supported 32-bit editions of Windows Vista and Windows Server 2008:
1. Run the following commands from an elevated administrator command prompt:
1. Restart the system.
Impact of workaround. Websites that use XML may no longer display or function correctly.
How to undo the workaround.
1. Run the following command from an elevated administrator command prompt:
2. Restart the system.
Set Internet and Local intranet security zone settings to 'High' to block ActiveX Controls and Active Scripting in these zones
You can help protect against exploitation of this vulnerability by changing your settings for the Internet security zone to block ActiveX controls and Active Scripting. You can do this by setting your browser security to High.
To raise the browsing security level in Internet Explorer, perform the following steps:
1. On the Internet Explorer Tools menu, click Internet Options.
2. In the Internet Options dialog box, click the Security tab, and then click the Internet icon.
3. Under Security level for this zone, move the slider to High. This sets the security level for all websites you visit to High.
Note If no slider is visible, click Default Level, and then move the slider to High.
Note Setting the level to High may cause some websites to work incorrectly. If you have difficulty using a website after you change this setting, and you are sure the site is safe to use, you can add that site to your list of trusted sites. This will allow the site to work correctly even with the security setting set to High.
Impact of workaround. There are side effects to blocking ActiveX Controls and Active Scripting. Many websites that are on the Internet or on an intranet use ActiveX or Active Scripting to provide additional functionality. For example, an online e-commerce site or banking site may use ActiveX Controls to provide menus, ordering forms, or even account statements. Blocking ActiveX Controls or Active Scripting is a global setting that affects all Internet and intranet sites. If you do not want to block ActiveX Controls or Active Scripting for such sites, use the steps outlined in 'Add sites that you trust to the Internet Explorer Trusted sites zone.'
Add sites that you trust to the Internet Explorer Trusted sites zone
After you set Internet Explorer to block ActiveX controls and Active Scripting in the Internet zone and in the Local intranet zone, you can add sites that you trust to the Internet Explorer Trusted sites zone. This will allow you to continue to use trusted websites exactly as you do today, while helping to protect yourself from this attack on untrusted sites. We recommend that you add only sites that you trust to the Trusted sites zone.
To do this, perform the following steps:
1. In Internet Explorer, click Tools, click InternetOptions, and then click the Security tab.
2. In the Select a web content zone to specify its current security settings box, click TrustedSites, and then click Sites.
3. If you want to add sites that do not require an encrypted channel, click to clear the Require server verification (https:) for all sites in this zone check box.
4. In the Add this website to the zone box, type the URL of a site that you trust, and then click Add.
5. Repeat these steps for each site that you want to add to the zone.
6. Click OK two times to accept the changes and return to Internet Explorer.
Note Add any sites that you trust not to take malicious action on your system. Two in particular that you may want to add are *.windowsupdate.microsoft.com and *.update.microsoft.com. These are the sites that will host the update, and it requires an ActiveX Control to install the update.
Prevent the MSXML 5.0 ActiveX control from being run in Internet Explorer
You can disable attempts to instantiate the MSXML 5.0 for Microsoft Office ActiveX control in Internet Explorer by setting the kill bit for the controls in the registry.
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
For detailed steps that you can use to prevent a control from running in Internet Explorer, see Microsoft Knowledge Base Article 240797. Follow the steps in the article to create a Compatibility Flags value in the registry to prevent a COM object from being instantiated in Internet Explorer.
To set the kill bit for the MSXML 5.0 for Microsoft Office ActiveX control, follow these steps:
1. Create a text file named Disable_MSXML5.reg with the following contents:
  Windows Registry Editor Version 5.00
  [HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerActiveX Compatibility{88d969e5-f192-11d4-a65f-0040963251e5}]
  'Compatibility Flags'=dword:00000400
  [HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftInternet ExplorerActiveX Compatibility{88d969e5-f192-11d4-a65f-0040963251e5}]
  'Compatibility Flags'=dword:00000400
  [HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerActiveX Compatibility{88d969e6-f192-11d4-a65f-0040963251e5}]
  'Compatibility Flags'=dword:00000400
  [HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftInternet ExplorerActiveX Compatibility{88d969e6-f192-11d4-a65f-0040963251e5}]
  'Compatibility Flags'=dword:00000400
2. Double-click the .reg file to apply it to an individual system.
3. Restart Internet Explorer for your changes to take effect.
  Note You can also apply the registry change across domains by using Group Policy. For more information about Group Policy, see Group Policy collection.

FAQ for MSXML Integer Truncation Vulnerability - CVE-2013-0006

What is the scope of the vulnerability?
This is a remote code execution vulnerability.

What causes the vulnerability?
The vulnerability is caused when Microsoft XML Core Services (MSXML) parses XML content, which can corrupt the system state in such a way as to allow an attacker to run arbitrary code.

What isthe component affected by the vulnerability?
The vulnerability affects Microsoft XML Core Services (MSXML), which allows customers who use JScript, Visual Basic Scripting Edition (VBScript), and Microsoft Visual Studio 6.0 to develop XML-based applications that provide interoperability with other applications that adhere to the XML 1.0 standard. For more information, see the MSDN site, MSXML.

What version of Microsoft XML Core Services is installed on my system?
Microsoft XML Core Services is included in additional non-operating system software from Microsoft and is also available as separate downloads. For information about the different Microsoft XML Core Services versions that are available and the products that install them, see Microsoft Knowledge Base Article 269238.

Note Depending on which version of Microsoft XML Core Services you have installed on your system, you may be offered more than one security update from this security bulletin.

What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. If a user is logged on with administrative user rights, an attacker could take complete control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

How could an attacker exploit thevulnerability?
An attacker could exploit the vulnerability by hosting a specially crafted website that is designed to invoke MSXML through Internet Explorer. This can also include compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these websites. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or in an Instant Messenger request that takes users to the attacker's website. It could also be possible to display specially crafted web content by using banner advertisements or by using other methods to deliver web content to affected systems.

Non-Microsoft web applications and services that utilize the MSXML library for parsing XML could also be vulnerable to this attack.

What systems are primarily at risk from the vulnerability?
This vulnerability requires that a user is logged on and visits a website for any malicious action to occur. Therefore, any systems where Internet Explorer is used frequently, such as workstations or terminal servers, are at the most risk from this vulnerability.

What does the update do?
The update addresses the vulnerability by modifying the way that Microsoft XML Core Services parses XML content.

When this security bulletin was issued, had this vulnerability been publicly disclosed?
No. Microsoft received information about this vulnerability through coordinated vulnerability disclosure.

When this security bulletin was issued, had Microsoft received any reports that this vulnerability was being exploited?
No. Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers when this security bulletin was originally issued.

MSXML XSLT Vulnerability - CVE-2013-0007

To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2013-0007.

Mitigating Factors for MSXML XSLT Vulnerability - CVE-2013-0007

In a web-based attack scenario, an attacker would have to host a website that contains a specially crafted webpage that is used to exploit this vulnerability. An attacker would have no way to force users to visit such a website. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes the user to the attacker's website.
An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
By default, Internet Explorer on Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, and Windows Server 2012 runs in a restricted mode that is known as Enhanced Security Configuration. This mode mitigates this vulnerability.

Workarounds for MSXML XSLT Vulnerability - CVE-2013-0007

Restrict access to msxml3.dll
For Windows XP Service Pack 3:
1. Run the following command from an elevated administrator command prompt:
  cacls %windir%system32msxml3.dll /E /P everyone:N
2. Restart the system.
  Impact of workaround. Websites that use XML may no longer display or function correctly.
How to undo the workaround.
1. Run the following command from an elevated administrator command prompt:
  cacls %windir%system32msxml3.dll /E /R everyone
2. Restart the system.
For all supported 32-bit editions of Windows Vista and Windows Server 2008:
1. Run the following commands from an elevated administrator command prompt:
1. Restart the system.
Impact of workaround. Websites that use XML may no longer display or function correctly.
How to undo the workaround.
1. Run the following command from an elevated administrator command prompt:
  icacls %windir%system32 /restore %TEMP%MSXML3_ACL.TXT
2. Restart the system.
Restrict access to msxml6.dll
For Windows XP Service Pack 3:
1. Run the following command from an elevated administrator command prompt:
  cacls %windir%system32msxml6.dll /E /P everyone:N
2. Restart the system.
Impact of workaround. Websites that use XML may no longer display or function correctly.
How to undo the workaround.
1. Run the following command from an elevated administrator command prompt:
  cacls %windir%system32msxml6.dll /E /R everyone
2. Restart the system.
For all supported 32-bit editions of Windows Vista and Windows Server 2008:
1. Run the following commands from an elevated administrator command prompt:
1. Restart the system.
Impact of workaround. Websites that use XML may no longer display or function correctly.
How to undo the workaround.
1. Run the following command from an elevated administrator command prompt:
  icacls %windir%system32 /restore %TEMP%MSXML6_ACL.TXT
2. Restart the system.
Set Internet and Local intranet security zone settings to 'High' to block ActiveX Controls and Active Scripting in these zones
You can help protect against exploitation of this vulnerability by changing your settings for the Internet security zone to block ActiveX controls and Active Scripting. You can do this by setting your browser security to High.
To raise the browsing security level in Internet Explorer, perform the following steps:
1. On the Internet Explorer Tools menu, click Internet Options.
2. In the Internet Options dialog box, click the Security tab, and then click the Internet icon.
3. Under Security level for this zone, move the slider to High. This sets the security level for all websites you visit to High.
Note If no slider is visible, click Default Level, and then move the slider to High.
Note Setting the level to High may cause some websites to work incorrectly. If you have difficulty using a website after you change this setting, and you are sure the site is safe to use, you can add that site to your list of trusted sites. This will allow the site to work correctly even with the security setting set to High.
Impact of workaround. There are side effects to blocking ActiveX Controls and Active Scripting. Many websites that are on the Internet or on an intranet use ActiveX or Active Scripting to provide additional functionality. For example, an online e-commerce site or banking site may use ActiveX Controls to provide menus, ordering forms, or even account statements. Blocking ActiveX Controls or Active Scripting is a global setting that affects all Internet and intranet sites. If you do not want to block ActiveX Controls or Active Scripting for such sites, use the steps outlined in 'Add sites that you trust to the Internet Explorer Trusted sites zone.'
Add sites that you trust to the Internet Explorer Trusted sites zone
After you set Internet Explorer to block ActiveX controls and Active Scripting in the Internet zone and in the Local intranet zone, you can add sites that you trust to the Internet Explorer Trusted sites zone. This will allow you to continue to use trusted websites exactly as you do today, while helping to protect yourself from this attack on untrusted sites. We recommend that you add only sites that you trust to the Trusted sites zone.
To do this, perform the following steps:
1. In Internet Explorer, click Tools, click InternetOptions, and then click the Security tab.
2. In the Select a web content zone to specify its current security settings box, click TrustedSites, and then click Sites.
3. If you want to add sites that do not require an encrypted channel, click to clear the Require server verification (https:) for all sites in this zone check box.
4. In the Add this website to the zone box, type the URL of a site that you trust, and then click Add.
5. Repeat these steps for each site that you want to add to the zone.
6. Click OK two times to accept the changes and return to Internet Explorer.
Note Add any sites that you trust not to take malicious action on your system. Two in particular that you may want to add are *.windowsupdate.microsoft.com and *.update.microsoft.com. These are the sites that will host the update, and it requires an ActiveX Control to install the update.
Prevent the MSXML 5.0 ActiveX control from being run in Internet Explorer
You can disable attempts to instantiate the MSXML 5.0 for Microsoft Office ActiveX control in Internet Explorer by setting the kill bit for the controls in the registry.
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
For detailed steps that you can use to prevent a control from running in Internet Explorer, see Microsoft Knowledge Base Article 240797. Follow the steps in the article to create a Compatibility Flags value in the registry to prevent a COM object from being instantiated in Internet Explorer.
To set the kill bit for the MSXML 5.0 for Microsoft Office ActiveX control, follow these steps:
1. Create a text file named Disable_MSXML5.reg with the following contents:
  Windows Registry Editor Version 5.00
  [HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerActiveX Compatibility{88d969e5-f192-11d4-a65f-0040963251e5}]
  'Compatibility Flags'=dword:00000400
  [HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftInternet ExplorerActiveX Compatibility{88d969e5-f192-11d4-a65f-0040963251e5}]
  'Compatibility Flags'=dword:00000400
  [HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerActiveX Compatibility{88d969e6-f192-11d4-a65f-0040963251e5}]
  'Compatibility Flags'=dword:00000400
  [HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftInternet ExplorerActiveX Compatibility{88d969e6-f192-11d4-a65f-0040963251e5}]
  'Compatibility Flags'=dword:00000400
2. Double-click the .reg file to apply it to an individual system.
3. Restart Internet Explorer for your changes to take effect.
  Note You can also apply the registry change across domains by using Group Policy. For more information about Group Policy, see Group Policy collection.

FAQ for MSXML XSLT Vulnerability - CVE-2013-0007

What is the scope of the vulnerability?
This is a remote code execution vulnerability.

What is the component affected by the vulnerability?
The vulnerability affects Microsoft XML Core Services (MSXML) which allows customers who use JScript, Visual Basic Scripting Edition (VBScript), and Microsoft Visual Studio 6.0 to develop XML-based applications that provide interoperability with other applications that adhere to the XML 1.0 standard. For more information, see the MSDN site, MSXML.

Note Depending on which version of Microsoft XML Core Services you have installed on your system, you may be offered more than one security update from this security bulletin.

What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could run arbitrary code as the current user. If the current user is logged on with administrative user rights, an attacker could take complete control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

How could an attacker exploit the vulnerability?
An attacker could exploit the vulnerability by hosting a specially crafted website that is designed to invoke MSXML through Internet Explorer. This can also include compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these websites. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or in an Instant Messenger request that takes users to the attacker's website. It could also be possible to display specially crafted web content by using banner advertisements or by using other methods to deliver web content to affected systems.

Non-Microsoft web applications and services that utilize the MSXML library for parsing XML could also be vulnerable to this attack.

What does the update do?
The update addresses the vulnerability by modifying the way that Microsoft XML Core Services parses XML content.

When this security bulletin was issued, had this vulnerability been publicly disclosed?
No. Microsoft received information about this vulnerability through coordinated vulnerability disclosure.

Update Information

Detection and Deployment Tools and Guidance

Security Central

Manage the software and security updates you need to deploy to the servers, desktop, and mobile systems in your organization. For more information see the TechNet Update Management Center. The Microsoft TechNet Security website provides additional information about security in Microsoft products.

Security updates are available from Microsoft Update and Windows Update. Security updates are also available from the Microsoft Download Center. You can find them most easily by doing a keyword search for 'security update.'

Finally, security updates can be downloaded from the Microsoft Update Catalog. The Microsoft Update Catalog provides a searchable catalog of content made available through Windows Update and Microsoft Update, including security updates, drivers and service packs. By searching using the security bulletin number (such as, 'MS12-001'), you can add all the applicable updates to your basket (including different languages for an update), and download to the folder of your choosing. For more information about the Microsoft Update Catalog, see the Microsoft Update Catalog FAQ.

Detection and Deployment Guidance

Microsoft provides detection and deployment guidance for security updates. This guidance contains recommendations and information that can help IT professionals understand how to use various tools for detection and deployment of security updates. For more information, see Microsoft Knowledge Base Article 961747.

Microsoft Baseline Security Analyzer

Microsoft Baseline Security Analyzer (MBSA) lets administrators scan local and remote systems for missing security updates as well as common security misconfigurations. For more information, see Microsoft Baseline Security Analyzer.

The following table provides the MBSA detection summary for this security update.

Software	MBSA
Windows XP Service Pack 3	Yes
Windows XP Professional x64 Edition Service Pack 2	Yes
Windows Server 2003 Service Pack 2	Yes
Windows Server 2003 x64 Edition Service Pack 2	Yes
Windows Server 2003 with SP2 for Itanium-based Systems	Yes
Windows Vista Service Pack 2	Yes
Windows Vista x64 Edition Service Pack 2	Yes
Windows Server 2008 for 32-bit Systems Service Pack 2	Yes
Windows Server 2008 for x64-based Systems Service Pack 2	Yes
Windows Server 2008 for Itanium-based Systems Service Pack 2	Yes
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1	Yes
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1	Yes
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1	Yes
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1	Yes
Windows 8 for 32-bit Systems	No
Windows 8 for 64-bit Systems	No
Windows Server 2012	No
Windows RT	No

Note For customers using legacy software not supported by the latest release of MBSA, Microsoft Update, and Windows Server Update Services, please see Microsoft Baseline Security Analyzer and reference the Legacy Product Support section on how to create comprehensive security update detection with legacy tools.

Windows Server Update Services

Windows Server Update Services (WSUS) enables information technology administrators to deploy the latest Microsoft product updates to computers that are running the Windows operating system. For more information about how to deploy security updates using Windows Server Update Services, see the TechNet article, Windows Server Update Services.

Systems Management Server

The following table provides the SMS detection and deployment summary for this security update.

Software	SMS 2003 with ITMU	System Center Configuration Manager (All Supported Versions)
Windows XP Service Pack 3	Yes	Yes
Windows XP Professional x64 Edition Service Pack 2	Yes	Yes
Windows Server 2003 Service Pack 2	Yes	Yes
Windows Server 2003 x64 Edition Service Pack 2	Yes	Yes
Windows Server 2003 with SP2 for Itanium-based Systems	Yes	Yes
Windows Vista Service Pack 2	Yes	Yes
Windows Vista x64 Edition Service Pack 2	Yes	Yes
Windows Server 2008 for 32-bit Systems Service Pack 2	Yes	Yes
Windows Server 2008 for x64-based Systems Service Pack 2	Yes	Yes
Windows Server 2008 for Itanium-based Systems Service Pack 2	Yes	Yes
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1	Yes	Yes
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1	Yes	Yes
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1	Yes	Yes
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1	Yes	Yes
Windows 8 for 32-bit Systems	Yes	Yes
Windows 8 for 64-bit Systems	Yes	Yes
Windows Server 2012	Yes	Yes
Windows RT	No	No

Note Microsoft discontinued support for SMS 2.0 on April 12, 2011. For SMS 2003, Microsoft also discontinued support for the Security Update Inventory Tool (SUIT) on April 12, 2011. Customers are encouraged to upgrade to System Center Configuration Manager. For customers remaining on SMS 2003 Service Pack 3, the Inventory Tool for Microsoft Updates (ITMU) is also an option.

For SMS 2003, the SMS 2003 Inventory Tool for Microsoft Updates (ITMU) can be used by SMS to detect security updates that are offered by Microsoft Update and that are supported by Windows Server Update Services. For more information about the SMS 2003 ITMU, see SMS 2003 Inventory Tool for Microsoft Updates. For more information about SMS scanning tools, see SMS 2003 Software Update Scanning Tools. See also Downloads for Systems Management Server 2003.

System Center Configuration Manager uses WSUS 3.0 for detection of updates. For more information, see System Center.

For more detailed information, see Microsoft Knowledge Base Article 910723: Summary list of monthly detection and deployment guidance articles.

Update Compatibility Evaluator and Application Compatibility Toolkit

Updates often write to the same files and registry settings required for your applications to run. This can trigger incompatibilities and increase the time it takes to deploy security updates. You can streamline testing and validating Windows updates against installed applications with the Update Compatibility Evaluator components included with Application Compatibility Toolkit.

The Application Compatibility Toolkit (ACT) contains the necessary tools and documentation to evaluate and mitigate application compatibility issues before deploying Windows Vista, a Windows Update, a Microsoft Security Update, or a new version of Windows Internet Explorer in your environment.

Security Update Deployment

Affected Software

For information about the specific security update for your affected software, click the appropriate link:

Windows XP (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Microsoft XML Core Services 4.0 when installed on Windows XP Service Pack 3: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on Windows XP Service Pack 3: WindowsXP-KB2757638-x86-ENU.exe /quiet
For Microsoft XML Core Services 3.0 on Windows XP Professional x64 Edition Service Pack 2: WindowsServer2003.WindowsXP-KB2757638-x64-ENU.exe /quiet
For Microsoft XML Core Services 4.0 when installed on Windows XP Professional x64 Edition Service Pack 2: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 when installed on Windows XP Professional x64 Edition Service Pack 2: msxml6-KB2758696-enu-amd64.exe /quiet
Installing without restarting	For Microsoft XML Core Services 4.0 when installed on Windows XP Service Pack 3: msxml4-KB2758694-enu.exe /norestart
For Microsoft XML Core Services 6.0 on Windows XP Service Pack 3: WindowsXP-KB2757638-x86-ENU.exe /norestart
For Microsoft XML Core Services 3.0 on Windows XP Professional x64 Edition Service Pack 2: WindowsServer2003.WindowsXP-KB2757638-x64-ENU.exe /norestart
For Microsoft XML Core Services 4.0 when installed on Windows XP Professional x64 Edition Service Pack 2: msxml4-KB2758694-enu.exe /norestart
For Microsoft XML Core Services 6.0 on Windows XP Professional x64 Edition Service Pack 2: msxml6-KB2758696-enu-amd64.exe /norestart
Update log file	KB2757638.log KB2758694.log KB2758696.log
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
HotPatching	Not applicable
Removal Information	For Microsoft XML Core Services 6.0 on Windows XP Service Pack 3 and for Microsoft XML Core Services 3.0 on Windows XP Professional x64 Edition Service Pack 2: Use Add or Remove Programs item in Control Panel or the Spuninst.exe utility located in %Windir%$NTUninstallKB2757638$Spuninst folder For Microsoft XML Core Services 4.0 when installed on Windows XP (all editions) and for Microsoft XML Core Services 6.0 when installed on Windows XP Professional x64 Edition Service Pack 2: Use Add or Remove Programs item in Control Panel
File Information	See the following: Microsoft Knowledge Base Article 2757638 Microsoft Knowledge Base Article 2758694 Microsoft Knowledge Base Article 2758696
Registry Key Verification	For Microsoft XML Core Services 4.0 when installed on Windows XP Service Pack 3: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesMSXML4SP3Q2758694
For Microsoft XML Core Services 6.0 on Windows XP Service Pack 3: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesWindows XP Version 2003SP3KB2757638Filelist
For Microsoft XML Core Services 3.0 on Windows XP Professional x64 Edition Service Pack 2: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesWindows XP Version 2003SP3KB2757638Filelist
For Microsoft XML Core Services 4.0 when installed on Windows XP Professional x64 Edition Service Pack 2: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesMSXML4SP3Q2758694
For Microsoft XML Core Services 6.0 on Windows XP Professional x64 Edition Service Pack 2: Note A registry key does not exist to validate the presence of this update

Note The update for supported versions of Windows XP Professional x64 Edition also applies to supported versions of Windows Server 2003 x64 Edition.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

If you have previously installed a hotfix to update one of these files, the installer copies the RTMQFE, SP1QFE, or SP2QFE files to your system. Otherwise, the installer copies the RTMGDR, SP1GDR, or SP2GDR files to your system. Security updates may not contain all variations of these files. For more information about this behavior, see Microsoft Knowledge Base Article 824994.

For more information about the installer, see Microsoft Knowledge Base Article 832475.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

The security updates for MSXML 3.0 and MSXML 6.0 on Windows XP Service Pack 3 support the following setup switches::

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/passive	Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet	Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]	Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Special Options
/overwriteoem	Overwrites OEM files without prompting.
/nobackup	Does not back up files needed for uninstall.
/forceappsclose	Forces other programs to close when the computer shuts down.
/log:path	Allows the redirection of installation log files.
/integrate:path	Integrates the update into the Windows source files. These files are located at the path that is specified in the switch.
/extract[:path]	Extracts files without starting the Setup program.
/ER	Enables extended error reporting.
/verbose	Enables verbose logging. During installation, creates %Windir%CabBuild.log. This log details the files that are copied. Using this switch may cause the installation to proceed more slowly.

**Note** You can combine these switches into one command. For backward compatibility, the security update also supports the setup switches that the earlier version of the Setup program uses. For more information about the supported installation switches, see [Microsoft Knowledge Base Article 262841](http://support.microsoft.com/kb/262841).

The security updates for MSXML 4.0 and MSXML 6.0 on Windows XP Professional x64 Edition Service Pack 2 support the following setup switches:

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/q[n\|b\|r\|f] or /quiet	Sets user interface level. n - No user interaction b - Basic user interaction r - Reduced user interaction f - Full user interaction (default)
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Logging Options
*/l[i\|w\|e\|a\|r\|u\|c\|m\|o\|p\|v\|x\|+\|!\|] <LogFile>**	i - Status messages w - Nonfatal warnings e - All error messages a - Start up of actions r - Action-specific records u - User requests c - Initial UI parameters m - Out-of-memory or fatal exit information o - Out-of-disk-space messages p - Terminal properties v - Verbose output x - Extra debugging information + - Append to existing log file ! - Flush each line to the log * - Log all information, except for v and x options
/log<LogFile>	Equivalent of /l* <LogFile>

**Note** You can combine these switches into one command. For backward compatibility, the security update also supports many of the setup switches that the earlier version of the Setup program uses. For more information about the supported installation switches, see [Microsoft Knowledge Base Article 262841](http://support.microsoft.com/kb/262841).

Removing the Update

This security update supports the following setup switches.

Supported Spuninst.exe Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/passive	Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet	Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart	Does not restart when installation has completed
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]	Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Special Options
/forceappsclose	Forces other programs to close when the computer shuts down.
/log:path	Allows the redirection of installation log files.

**Verifying That the Update Has Been Applied**

Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start, and then click Search.
2. In the Search Results pane, click All files and folders under Search Companion.
3. In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
4. In the list of files, right-click a file name from the appropriate file information table, and then click Properties.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
5. On the Version tab, determine the version of the file that is installed on your system by comparing it to the version that is documented in the appropriate file information table.
  Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
Registry Key Verification
You may also be able to verify the files that this security update has installed by reviewing the registry keys listed in the Reference Table in this section.
These registry keys may not contain a complete list of installed files. Also, these registry keys may not be created correctly when an administrator or an OEM integrates or slipstreams this security update into the Windows installation source files.

Windows Server 2003 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows Server 2003: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows Server 2003: msxml6-KB2758696-enu-x86.exe /quiet
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows Server 2003: WindowsServer2003.WindowsXP-KB2757638-x64-ENU.exe /quiet
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows Server 2003: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows Server 2003: msxml6-KB2758696-enu-amd64.exe /quiet
For Microsoft XML Core Services 3.0 on all supported Itanium-based editions of Windows Server 2003: WindowsServer2003-KB2757638-ia64-ENU.exe /quiet
For Microsoft XML Core Services 4.0 when installed on all supported Itanium-based editions of Windows Server 2003: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported Itanium-based editions of Windows Server 2003: msxml6-KB2758696-enu-ia64.exe /quiet
Installing without restarting	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows Server 2003: msxml4-KB2758694-enu.exe /norestart
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows Server 2003: msxml6-KB2758696-enu-x86.exe /norestart
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows Server 2003: WindowsServer2003.WindowsXP-KB2757638-x64-ENU.exe /norestart
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows Server 2003: msxml4-KB2758694-enu.exe /norestart
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows Server 2003: msxml6-KB2758696-enu-amd64.exe /norestart
For Microsoft XML Core Services 3.0 on all supported Itanium-based editions of Windows Server 2003: WindowsServer2003-KB2757638-ia64-ENU.exe /norestart
For Microsoft XML Core Services 4.0 when installed on all supported Itanium-based editions of Windows Server 2003: msxml4-KB2758694-enu.exe /norestart
For Microsoft XML Core Services 6.0 on all supported Itanium-based editions of Windows Server 2003: msxml6-KB2758696-enu-ia64.exe /norestart
Update log file	KB2757638.log KB2758694.log KB2758696.log
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
HotPatching	This security update does not support HotPatching. For more information about HotPatching, see [Microsoft Knowledge Base Article 897341](http://support.microsoft.com/kb/897341).
Removal Information	For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows Server 2003 and for Microsoft XML Core Services 3.0 on all supported Itanium-based editions of Windows Server 2003: Use Add or Remove Programs item in Control Panel or the Spuninst.exe utility located in %Windir%$NTUninstallKB2757638$Spuninst folder For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows Server 2003, and for Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows Server 2003, and for Microsoft XML Core Services 4.0 when installed on all supported Itanium-based editions of Windows Server 2003: Use Add or Remove Programs item in Control Panel For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows Server 2003, and for Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows Server 2003, and for Microsoft XML Core Services 6.0 on all supported Itanium-based editions of Windows Server 2003: Use Add or Remove Programs item in Control Panel
File Information	See the following: [Microsoft Knowledge Base Article 2757638](http://support.microsoft.com/kb/2757638) [Microsoft Knowledge Base Article 2758694](http://support.microsoft.com/kb/2758694) [Microsoft Knowledge Base Article 2758696](http://support.microsoft.com/kb/2758696)
Registry Key Verification	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows Server 2003: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesMSXML4SP3Q2758694
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows Server 2003: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesWindows XP Version 2003SP3KB2758696Filelist
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows Server 2003: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesWindows XP Version 2003SP3KB2757638Filelist
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows Server 2003: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesMSXML4SP3Q2758694
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows Server 2003: Note A registry key does not exist to validate the presence of this update

**Note** The update for supported versions of Windows Server 2003 x64 Edition also applies to supported versions of Windows XP Professional x64 Edition.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the installer, see Microsoft Knowledge Base Article 832475.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

The security updates for MSXML 3.0 support the following setup switches:

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/passive	Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet	Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]	Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Special Options
/overwriteoem	Overwrites OEM files without prompting.
/nobackup	Does not back up files needed for uninstall.
/forceappsclose	Forces other programs to close when the computer shuts down.
/log:path	Allows the redirection of installation log files.
/integrate:path	Integrates the update into the Windows source files. These files are located at the path that is specified in the switch.
/extract[:path]	Extracts files without starting the Setup program.
/ER	Enables extended error reporting.
/verbose	Enables verbose logging. During installation, creates %Windir%CabBuild.log. This log details the files that are copied. Using this switch may cause the installation to proceed more slowly.

The security updates for MSXML 4.0 and MSXML 6.0 support the following setup switches:

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/q[n\|b\|r\|f] or /quiet	Sets user interface level. n - No user interaction b - Basic user interaction r - Reduced user interaction f - Full user interaction (default)
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Logging Options
*/l[i\|w\|e\|a\|r\|u\|c\|m\|o\|p\|v\|x\|+\|!\|] <LogFile>**	i - Status messages w - Nonfatal warnings e - All error messages a - Start up of actions r - Action-specific records u - User requests c - Initial UI parameters m - Out-of-memory or fatal exit information o - Out-of-disk-space messages p - Terminal properties v - Verbose output x - Extra debugging information + - Append to existing log file ! - Flush each line to the log * - Log all information, except for v and x options
/log<LogFile>	Equivalent of /l* <LogFile>

Removing the Update

This security update supports the following setup switches.

Supported Spuninst.exe Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/passive	Unattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quiet	Quiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]	Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Special Options
/forceappsclose	Forces other programs to close when the computer shuts down.
/log:path	Allows the redirection of installation log files.

**Verifying that the Update Has Been Applied**

Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start, and then click Search.
2. In the Search Results pane, click All files and folders under Search Companion.
3. In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
4. In the list of files, right-click a file name from the appropriate file information table, and then click Properties.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
5. On the Version tab, determine the version of the file that is installed on your system by comparing it to the version that is documented in the appropriate file information table.
  Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
Registry Key Verification
You may also be able to verify the files that this security update has installed by reviewing the registry keys listed in the Reference Table in this section.
These registry keys may not contain a complete list of installed files. Also, these registry keys may not be created correctly when an administrator or an OEM integrates or slipstreams this security update into the Windows installation source files.

Windows Vista (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion inFuture Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows Vista: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows Vista: Windows6.0-KB2757638-x86.msu /quiet
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows Vista: Windows6.0-KB2757638-x64.msu /quiet
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows Vista: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows Vista: Windows6.0-KB2757638-x64.msu /quiet
Installing without restarting	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows Vista: msxml4-KB2758694-enu.exe / norestart
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows Vista: Windows6.0-KB2757638-x86.msu /norestart
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows Vista: Windows6.0-KB2757638-x64.msu / norestart
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows Vista: msxml4-KB2758694-enu.exe / norestart
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows Vista: Windows6.0-KB2757638-x64.msu / norestart
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
HotPatching	Not applicable.
Removal Information	WUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates and select from the list of updates.
File Information	See the following: Microsoft Knowledge Base Article 2757638 Microsoft Knowledge Base Article 2758694
Registry Key Verification	For Microsoft XML Core Services 3.0 on all supported editions of Windows Vista: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.
For Microsoft XML Core Services 4.0 when installed on all supported editions of Windows Vista: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesMSXML4SP3Q2758694
For Microsoft XML Core Services 6.0 on all supported editions of Windows Vista: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

The security updates for MSXML 3.0 and MSXML 6.0 support the following setup switches:

Supported Security Update Installation Switches

Switch	Description
/?, /h,/help	Displays help on supported switches.
/quiet	Suppresses the display of status or error messages.
/norestart	When combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.

Note For more information about the wusa.exe installer, see Microsoft Knowledge Base Article 934307.

The security update for MSXML 4.0 supports the following setup switches:

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/q[n\|b\|r\|f] or /quiet	Sets user interface level. n - No user interaction b - Basic user interaction r - Reduced user interaction f - Full user interaction (default)
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Logging Options
*/l[i\|w\|e\|a\|r\|u\|c\|m\|o\|p\|v\|x\|+\|!\|] <LogFile>**	i - Status messages w - Nonfatal warnings e - All error messages a - Start up of actions r - Action-specific records u - User requests c - Initial UI parameters m - Out-of-memory or fatal exit information o - Out-of-disk-space messages p - Terminal properties v - Verbose output x - Extra debugging information + - Append to existing log file ! - Flush each line to the log * - Log all information, except for v and x options
/log<LogFile>	Equivalent of /l* <LogFile>

Verifying That the Update Has Been Applied

Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Start Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows Server 2008 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows Server 2008: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows Server 2008: Windows6.0-KB2757638-x86.msu /quiet
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows Server 2008: Windows6.0-KB2757638-x64.msu /quiet
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows Server 2008: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows Server 2008: Windows6.0-KB2757638-x64.msu /quiet
For Microsoft XML Core Services 3.0 on all supported Itanium-based editions of Windows Server 2008: Windows6.0-KB2757638-ia64.msu /quiet
For Microsoft XML Core Services 4.0 when installed on all supported Itanium-based editions of Windows Server 2008: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported Itanium-based editions of Windows Server 2008: Windows6.0-KB2757638-ia64.msu /quiet
Installing without restarting	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows Server 2008: msxml4-KB2758694-enu.exe /norestart
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows Server 2008: Windows6.0-KB2757638-x86.msu /norestart
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows Server 2008: Windows6.0-KB2757638-x64.msu /norestart
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows Server 2008: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows Server 2008: Windows6.0-KB2757638-x64.msu /norestart
For Microsoft XML Core Services 3.0 on all supported Itanium-based editions of Windows Server 2008: Windows6.0-KB2757638-ia64.msu /norestart
For Microsoft XML Core Services 4.0 when installed on all supported Itanium-based editions of Windows Server 2008: msxml4-KB2758694-enu.exe /norestart
For Microsoft XML Core Services 6.0 on all supported Itanium-based editions of Windows Server 2008: Windows6.0-KB2757638-ia64.msu /norestart
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
HotPatching	Not applicable.
Removal Information	WUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates and select from the list of updates.
File Information	See the following: Microsoft Knowledge Base Article 2757638 Microsoft Knowledge Base Article 2758694
Registry Key Verification	For Microsoft XML Core Services 3.0 on all supported editions of Windows Server 2008: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.
For Microsoft XML Core Services 4.0 when installed on all supported editions of Windows Server 2008: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesMSXML4SP3Q2758694
For Microsoft XML Core Services 6.0 on all supported editions of Windows Server 2008: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

The security updates for MSXML 3.0 and MSXML 6.0 support the following setup switches:

Supported Security Update Installation Switches

Switch	Description
/?, /h,/help	Displays help on supported switches.
/quiet	Suppresses the display of status or error messages.
/norestart	When combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.

Note For more information about the wusa.exe installer, see Microsoft Knowledge Base Article 934307.

The security update for MSXML 4.0 supports the following setup switches:

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/q[n\|b\|r\|f] or /quiet	Sets user interface level. n - No user interaction b - Basic user interaction r - Reduced user interaction f - Full user interaction (default)
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Logging Options
*/l[i\|w\|e\|a\|r\|u\|c\|m\|o\|p\|v\|x\|+\|!\|] <LogFile>**	i - Status messages w - Nonfatal warnings e - All error messages a - Start up of actions r - Action-specific records u - User requests c - Initial UI parameters m - Out-of-memory or fatal exit information o - Out-of-disk-space messages p - Terminal properties v - Verbose output x - Extra debugging information + - Append to existing log file ! - Flush each line to the log * - Log all information, except for v and x options
/log<LogFile>	Equivalent of /l* <LogFile>

Verifying That the Update Has Been Applied

Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Start Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows 7 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows 7: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows 7: Windows6.1-KB2757638-x86.msu /quiet
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows 7: Windows6.1-KB2757638-x64.msu /quiet
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows 7: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows 7: Windows6.1-KB2757638-x64.msu /quiet
Installing without restarting	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows 7: msxml4-KB2758694-enu.exe /quiet /norestart
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows 7: Windows6.1-KB2757638-x86.msu /quiet /norestart
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows 7: Windows6.1-KB2757638-x64.msu /quiet /norestart
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows 7: msxml4-KB2758694-enu.exe /quiet /norestart
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows 7: Windows6.1-KB2757638-x64.msu /quiet /norestart
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
HotPatching	Not applicable.
Removal Information	To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates and select from the list of updates.
File Information	See the following: Microsoft Knowledge Base Article 2757638 Microsoft Knowledge Base Article 2758694
Registry Key Verification	For Microsoft XML Core Services 3.0 on all supported editions of Windows 7: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.
For Microsoft XML Core Services 4.0 when installed on all supported editions of Windows 7: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesMSXML4SP3Q2758694
For Microsoft XML Core Services 6.0 on all supported editions of Windows 7: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

The security updates for MSXML 3.0 and MSXML 6.0 support the following setup switches:

Supported Security Update Installation Switches

Switch	Description
/?, /h,/help	Displays help on supported switches.
/quiet	Suppresses the display of status or error messages.
/norestart	When combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.
/warnrestart:<seconds>	When combined with /quiet, the installer will warn the user before initiating restart.
/promptrestart	When combined with /quiet, the installer will prompt before initiating restart.
/forcerestart	When combined with /quiet, the installer will forcefully close applications and initiate restart.
/log:<file name>	Enables logging to specified file.
/extract:<destination>	Extracts the package contents to the destination folder.
/uninstall /kb:<KB Number>	Uninstalls the security update.

Note For more information about the wusa.exe installer, see 'Windows Update Stand-alone Installer' in the TechNet article, Miscellaneous Changes in Windows 7.

The security update for MSXML 4.0 supports the following setup switches:

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/q[n\|b\|r\|f] or /quiet	Sets user interface level. n - No user interaction b - Basic user interaction r - Reduced user interaction f - Full user interaction (default)
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Logging Options
*/l[i\|w\|e\|a\|r\|u\|c\|m\|o\|p\|v\|x\|+\|!\|] <LogFile>**	i - Status messages w - Nonfatal warnings e - All error messages a - Start up of actions r - Action-specific records u - User requests c - Initial UI parameters m - Out-of-memory or fatal exit information o - Out-of-disk-space messages p - Terminal properties v - Verbose output x - Extra debugging information + - Append to existing log file ! - Flush each line to the log * - Log all information, except for v and x options
/log<LogFile>	Equivalent of /l* <LogFile>

Verifying Thatthe Update Has Been Applied

Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows Server 2008 R2 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows Server 2008 R2: Windows6.1-KB2757638-x64.msu /quiet
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows Server 2008 R2: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows Server 2008 R2: Windows6.1-KB2757638-x64.msu /quiet
For Microsoft XML Core Services 3.0 on all supported Itanium-based editions of Windows Server 2008 R2: Windows6.1-KB2757638-ia64.msu /quiet
For Microsoft XML Core Services 4.0 when installed on all supported Itanium-based editions of Windows Server 2008 R2: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported Itanium-based editions of Windows Server 2008 R2: Windows6.1-KB2757638-ia64.msu /quiet
Installing without restarting	For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows Server 2008 R2: Windows6.1-KB2757638-x64.msu /quiet /norestart
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows Server 2008 R2: msxml4-KB2758694-enu.exe /quiet /norestart
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows Server 2008 R2: Windows6.1-KB2757638-x64.msu /quiet /norestart
For Microsoft XML Core Services 3.0 on all supported Itanium-based editions of Windows Server 2008 R2: Windows6.1-KB2757638-ia64.msu /quiet /norestart
For Microsoft XML Core Services 4.0 when installed on all supported Itanium-based editions of Windows Server 2008 R2: msxml4-KB2758694-enu.exe /quiet /norestart
For Microsoft XML Core Services 6.0 on all supported Itanium-based editions of Windows Server 2008 R2: Windows6.1-KB2757638-ia64.msu /quiet /norestart
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
HotPatching	Not applicable.
Removal Information	To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates and select from the list of updates.
File Information	See the following: Microsoft Knowledge Base Article 2757638 Microsoft Knowledge Base Article 2758694
Registry Key Verification	For Microsoft XML Core Services 3.0 on all supported editions of Windows Server 2008 R2: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.
For Microsoft XML Core Services 4.0 when installed on all supported editions of Windows Server 2008 R2: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesMSXML4SP3Q2758694
For Microsoft XML Core Services 6.0 on all supported editions of Windows Server 2008 R2: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

The security updates for MSXML 3.0 and MSXML 6.0 support the following setup switches:

Supported Security Update Installation Switches

Switch	Description
/?, /h,/help	Displays help on supported switches.
/quiet	Suppresses the display of status or error messages.
/norestart	When combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.
/warnrestart:<seconds>	When combined with /quiet, the installer will warn the user before initiating restart.
/promptrestart	When combined with /quiet, the installer will prompt before initiating restart.
/forcerestart	When combined with /quiet, the installer will forcefully close applications and initiate restart.
/log:<file name>	Enables logging to specified file.
/extract:<destination>	Extracts the package contents to the destination folder.
/uninstall /kb:<KB Number>	Uninstalls the security update.

Note For more information about the wusa.exe installer, see 'Windows Update Stand-alone Installer' in the TechNet article, Miscellaneous Changes in Windows 7.

The security update for MSXML 4.0 supports the following setup switches:

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/q[n\|b\|r\|f] or /quiet	Sets user interface level. n - No user interaction b - Basic user interaction r - Reduced user interaction f - Full user interaction (default)
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Logging Options
*/l[i\|w\|e\|a\|r\|u\|c\|m\|o\|p\|v\|x\|+\|!\|] <LogFile>**	i - Status messages w - Nonfatal warnings e - All error messages a - Start up of actions r - Action-specific records u - User requests c - Initial UI parameters m - Out-of-memory or fatal exit information o - Out-of-disk-space messages p - Terminal properties v - Verbose output x - Extra debugging information + - Append to existing log file ! - Flush each line to the log * - Log all information, except for v and x options
/log<LogFile>	Equivalent of /l* <LogFile>

Verifying That the Update Has Been Applied

Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Start Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows 8 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows 8: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows 8: Windows8-RT-KB2757638-x86.msu /quiet
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows 8: Windows8-RT-KB2757638-x64.msu /quiet
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows 8: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows 8: Windows8-RT-KB2757638-x64.msu /quiet
Installing without restarting	For Microsoft XML Core Services 4.0 when installed on all supported 32-bit editions of Windows 8: msxml4-KB2758694-enu.exe /quiet /norestart
For Microsoft XML Core Services 6.0 on all supported 32-bit editions of Windows 8: Windows8-RT-KB2757638-x86.msu /quiet /norestart
For Microsoft XML Core Services 3.0 on all supported x64-based editions of Windows 8: Windows8-RT-KB2757638-x64.msu /quiet /norestart
For Microsoft XML Core Services 4.0 when installed on all supported x64-based editions of Windows 8: msxml4-KB2758694-enu.exe /quiet /norestart
For Microsoft XML Core Services 6.0 on all supported x64-based editions of Windows 8: Windows8-RT-KB2757638-x64.msu /quiet /norestart
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
HotPatching	Not applicable.
Removal Information	To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then click Installed updates and select from the list of updates.
File Information	See the following: Microsoft Knowledge Base Article 2757638 Microsoft Knowledge Base Article 2758694
Registry Key Verification	For Microsoft XML Core Services 3.0 on all supported editions of Windows 8: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.
For Microsoft XML Core Services 4.0 when installed on all supported editions of Windows 8: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesMSXML4SP3Q2758694
For Microsoft XML Core Services 6.0 on all supported editions of Windows 8: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

The security updates for MSXML 3.0 and MSXML 6.0 support the following setup switches:

Supported Security Update Installation Switches

Switch	Description
/?, /h,/help	Displays help on supported switches.
/quiet	Suppresses the display of status or error messages.
/norestart	When combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.
/warnrestart:<seconds>	When combined with /quiet, the installer will warn the user before initiating restart.
/promptrestart	When combined with /quiet, the installer will prompt before initiating restart.
/forcerestart	When combined with /quiet, the installer will forcefully close applications and initiate restart.
/log:<file name>	Enables logging to specified file.
/extract:<destination>	Extracts the package contents to the destination folder.
/uninstall /kb:<KB Number>	Uninstalls the security update.

Note For more information about the wusa.exe installer, see 'Windows Update Stand-alone Installer' in the TechNet article, Miscellaneous Changes in Windows 7.

The security update for MSXML 4.0 supports the following setup switches:

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/q[n\|b\|r\|f] or /quiet	Sets user interface level. n - No user interaction b - Basic user interaction r - Reduced user interaction f - Full user interaction (default)
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Logging Options
*/l[i\|w\|e\|a\|r\|u\|c\|m\|o\|p\|v\|x\|+\|!\|] <LogFile>**	i - Status messages w - Nonfatal warnings e - All error messages a - Start up of actions r - Action-specific records u - User requests c - Initial UI parameters m - Out-of-memory or fatal exit information o - Out-of-disk-space messages p - Terminal properties v - Verbose output x - Extra debugging information + - Append to existing log file ! - Flush each line to the log * - Log all information, except for v and x options
/log<LogFile>	Equivalent of /l* <LogFile>

Verifying Thatthe Update Has Been Applied

File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows Server 2012 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Microsoft XML Core Services 3.0 on all supported editions of Windows Server 2012: Windows8-RT-KB2757638-x64.msu /quiet
For Microsoft XML Core Services 4.0 when installed on all supported editions of Windows Server 2012: msxml4-KB2758694-enu.exe /quiet
For Microsoft XML Core Services 6.0 on all supported editions of Windows Server 2012: Windows8-RT-KB2757638-x64.msu /quiet
Installing without restarting	For Microsoft XML Core Services 3.0 when installed on all supported editions of Windows Server 2012: Windows8-RT-KB2757638-x64.msu /quiet /norestart
For Microsoft XML Core Services 4.0 when installed on all supported editions of Windows Server 2012: msxml4-KB2758694-enu.exe /quiet /norestart
For Microsoft XML Core Services 6.0 on all supported editions of Windows Server 2012: Windows8-RT-KB2757638-x64.msu /quiet /norestart
Further information	See the subsection, Detection and Deployment Tools and Guidance
Restart Requirement
Restart required?	This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.
HotPatching	Not applicable.
Removal Information	To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then click Installed updates and select from the list of updates.
File Information	See the following: Microsoft Knowledge Base Article 2757638 Microsoft Knowledge Base Article 2758694
Registry Key Verification	For Microsoft XML Core Services 3.0 on all supported editions of Windows Server 2012: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.
For Microsoft XML Core Services 4.0 when installed on all supported editions of Windows Server 2012: HKEY_LOCAL_MACHINESOFTWAREMicrosoftUpdatesMSXML4SP3Q2758694
For Microsoft XML Core Services 6.0 on all supported editions of Windows Server 2012: Note A registry key does not exist to validate the presence of this update. Use WMI to detect for the presence of this patch.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

The security updates for MSXML 3.0 and MSXML 6.0 support the following setup switches:

Supported Security Update Installation Switches

Switch	Description
/?, /h,/help	Displays help on supported switches.
/quiet	Suppresses the display of status or error messages.
/norestart	When combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.
/warnrestart:<seconds>	When combined with /quiet, the installer will warn the user before initiating restart.
/promptrestart	When combined with /quiet, the installer will prompt before initiating restart.
/forcerestart	When combined with /quiet, the installer will forcefully close applications and initiate restart.
/log:<file name>	Enables logging to specified file.
/extract:<destination>	Extracts the package contents to the destination folder.
/uninstall /kb:<KB Number>	Uninstalls the security update.

Note For more information about the wusa.exe installer, see 'Windows Update Stand-alone Installer' in the TechNet article, Miscellaneous Changes in Windows 7.

The security update for MSXML 4.0 supports the following setup switches:

Supported Security Update Installation Switches
Switch	Description
/help	Displays the command-line options.
Setup Modes
/q[n\|b\|r\|f] or /quiet	Sets user interface level. n - No user interaction b - Basic user interaction r - Reduced user interaction f - Full user interaction (default)
Restart Options
/norestart	Does not restart when installation has completed.
/forcerestart	Restarts the computer after installation and force other applications to close at shutdown without saving open files first.
/promptrestart	Displays a dialog box prompting the local user to allow a restart.
Logging Options
*/l[i\|w\|e\|a\|r\|u\|c\|m\|o\|p\|v\|x\|+\|!\|] <LogFile>**	i - Status messages w - Nonfatal warnings e - All error messages a - Start up of actions r - Action-specific records u - User requests c - Initial UI parameters m - Out-of-memory or fatal exit information o - Out-of-disk-space messages p - Terminal properties v - Verbose output x - Extra debugging information + - Append to existing log file ! - Flush each line to the log * - Log all information, except for v and x options
/log<LogFile>	Equivalent of /l* <LogFile>

Verifying That the Update Has Been Applied

File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Start Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows RT (all editions)

The following table contains the security update information for this software.

Inclusion in FutureService Packs	The update for this issue will be included in a future service pack or update rollup.
Deployment
This update is available via Windows Update.
Restart Requirement
Restart required?	Yes, you must restart your system after you apply this security update.
Removal Information	Click Control Panel, click System and Security, and then under Windows Update, click Installed updates and select from the list of updates.
File Information	See the following: Microsoft Knowledge Base Article 2757638 Microsoft Knowledge Base Article 2758694

Office 2003 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the Deployment Information subsection below.

Inclusion in Future Service Packs	There are no more service packs planned for this software. The update for this issue may be included in a future update rollup.
Deployment
Installing without user intervention	For Microsoft XML Core Services 5.0 when installed with Microsoft Office 2003 Service Pack 3: office2003-kb2760574-fullfile-enu.exe /q:a
Installing without restarting	For Microsoft XML Core Services 5.0 when installed with Microsoft Office 2003 Service Pack 3: office2003-kb2760574-fullfile-enu.exe /r:n
Update log file	Not applicable
Further information	For detection and deployment, see the earlier section, Detection and Deployment Tools and Guidance. For features you can selectively install, see the Office Features for Administrative Installations subsection in this section.
Restart Requirement
Restart required?	In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart, see Microsoft Knowledge Base Article 887012.
HotPatching	Not applicable
Removal Information	Use Add or Remove Programs item in Control Panel. Note When you remove this update, you may be prompted to insert the Microsoft Office 2003 CD in the CD drive. Additionally, you may not have the option to uninstall the update from the Add or Remove Programs item in Control Panel. There are several possible causes for this issue. For more information about the removal, see Microsoft Knowledge Base Article 903771.
File Information	See Microsoft Knowledge Base Article 2760574
Registry Key Verification	Not applicable

#### Office Features The following table contains the list of feature names (case sensitive) that must be reinstalled for the update. To install all features, you can use **REINSTALL=ALL** or you can install the following features: | Product | Feature | |---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------| | ACCESSRT, OUTLS11, VISVEA, RMS, BASIC11, FP11, ONOTE11, OUTLSM11, PERS11, PUB11, STDP11, STD11, INF11, PRJPROE, PRJPRO, PRJSTDE, PRJSTD, VISPRO, VISPROR, VISSTD, VISSTDR | ProductNonBootFiles | | PPT11, ACC11, OUTL11, PRO11SB, PROI11, PRO11, WORD11, EXCEL11 | ProductNonBootFiles,LISTFiles | **Note** Administrators working in managed environments can find complete resources for deploying Office updates in an organization at the Office Admin Update Center. At that site, scroll down and look under the **Update Resources** section for the software version you are updating. The [Windows Installer Documentation](http://go.microsoft.com/fwlink/?linkid=21685) also provides more information about the parameters supported by Windows Installer. #### Deployment Information **Installing the Update** You can install the update from the appropriate download link in the Affected and Non-Affected Software section. If you installed your application from a server location, the server administrator must instead update the server location with the administrative update and deploy that update to your system. For more information about Administrative Installation Points, refer to the **Office Administrative Installation Point** information in the **Detection and deployment Tools and Guidance** subsection. This security update requires that Windows Installer 2.0 or later version be installed on the system. All supported versions of Windows include Windows Installer 2.0 or a later version. To install the 2.0 or later version of Windows Installer, visit one of the following Microsoft websites: - [Windows Installer 4.5 Redistributable for Windows Server 2008, Windows Vista, Windows Server 2003, and Windows XP](http://www.microsoft.com/downloads/details.aspx?familyid=5a58b56f-60b6-4412-95b9-54d056d6f9f4&displaylang=en) - [Windows Installer 3.1 Redistributable for Windows Server 2003, Windows XP, and Microsoft Windows 2000](http://www.microsoft.com/downloads/details.aspx?familyid=889482fc-5f56-4a38-b838-de776fd4138c&displaylang=en) - [Windows Installer 2.0 Redistributable for Microsoft Windows 2000 and Windows NT 4.0](http://go.microsoft.com/fwlink/?linkid=33338) For more information about the terminology that appears in this bulletin, such as hotfix, see [Microsoft Knowledge Base Article 824684](http://support.microsoft.com/kb/824684). This security update supports the following setup switches.

Supported Security Update Installation Switches

Switch	Description
/q	Specifies quiet mode, or suppresses prompts, when files are being extracted.
/q:u	Specifies user-quiet mode, which presents some dialog boxes to the user.
/q:a	Specifies administrator-quiet mode, which does not present any dialog boxes to the user.
/t:path	Specifies the target folder for extracting files.
/c	Extracts the files without installing them. If /t:path is not specified, you are prompted for a target folder.
/c:path	Overrides the install command that is defined by author. Specifies the path and name of the Setup.inf or .exe file.
/r:n	Never restarts the system after installation.
/r:I	Prompts the user to restart the system if a restart is required, except when used with /q:a.
/r:a	Always restarts the system after installation.
/r:s	Restarts the system after installation without prompting the user.
/n:v	No version checking - Install the program over any earlier version.

Note You can combine these switches into one command. For backward compatibility, the security update also supports many of the setup switches that the earlier version of the Setup program uses. For more information about the supported installation switches, see Microsoft Knowledge Base Article 262841.

Removing the Update

Microsoft Xml Parser Windows 10

To remove this security update, use the Add or Remove Programs item in Control Panel.

Note When you remove this update, you may be prompted to insert the Microsoft Office 2003 CD in the CD drive. Additionally, you may not have the option to uninstall the update from the Add or Remove Programs item in Control Panel. There are several possible causes for this issue. For more information about the removal, see Microsoft Knowledge Base Article 903771.

Verifying that the Update Has Been Applied

Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Start Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Office 2007, Office Compatibility Pack, Word Viewer, Expression Web, and Expression Web 2 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Microsoft XML Core Services 5.0 when installed with all affected editions of Office 2007, Office Compatibility Pack, Word Viewer, Expression Web, and Expression Web 2: msxml52007-kb2687499-fullfile-x86-glb.exe.exe /passive
Installing without restarting	For Microsoft XML Core Services 5.0 when installed with all affected editions of Office 2007, Office Compatibility Pack, Word Viewer, Expression Web, and Expression Web 2: msxml52007-kb2687499-fullfile-x86-glb.exe /norestart
Update log file	Not applicable
Further information	For detection and deployment, see the earlier section, Detection and Deployment Tools and Guidance.
Restart Requirement
Restart required?	In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart, see Microsoft Knowledge Base Article 887012.
HotPatching	Not applicable
Removal Information	Use Add or Remove Programs item in Control Panel.
File Information	See Microsoft Knowledge Base Article 2687499
Registry KeyVerification	Not applicable

#### Deployment Information **Installing the Update** You can install the update from the appropriate download link in the Affected and Non-Affected Software section. If you installed your application from a server location, the server administrator must instead update the server location with the administrative update and deploy that update to your system. For more information about Administrative Installation Points, refer to the **Office Administrative Installation Point** information in the **Detection and deployment Tools and Guidance** subsection. This security update requires that Windows Installer 3.1 or later version be installed on the system. To install the 3.1 or later version of Windows Installer, visit one of the following Microsoft websites: - [Windows Installer 4.5 Redistributable for Windows Server 2008, Windows Vista, Windows Server 2003, and Windows XP](http://www.microsoft.com/downloads/details.aspx?familyid=5a58b56f-60b6-4412-95b9-54d056d6f9f4&displaylang=en) - [Windows Installer 3.1 Redistributable for Windows Server 2003, Windows XP, and Microsoft Windows 2000](http://www.microsoft.com/downloads/details.aspx?familyid=889482fc-5f56-4a38-b838-de776fd4138c&displaylang=en) For more information about the terminology that appears in this bulletin, such as hotfix, see [Microsoft Knowledge Base Article 824684](http://support.microsoft.com/kb/824684). This security update supports the following setup switches.

Supported Security Update Installation Switches

Switch	Description
/? or /help	Displays usage dialog.
/passive	Specifies passive mode. Requires no user interaction; users see basic progress dialogs but cannot cancel.
/quiet	Specifies quiet mode, or suppresses prompts, when files are being extracted.
/norestart	Suppresses restarting the system if the update requires a restart.
/forcerestart	Automatically restarts the system after applying the update, regardless of whether the update requires the restart.
/extract	Extracts the files without installing them. You are prompted for a target folder.
/extract:<path>	Overrides the install command that is defined by author. Specifies the path and name of the Setup.inf or .exe file.
/lang:<LCID>	Forces the use of a specific language, when the update package supports that language.
/log:<log file>	Enables logging, by both Vnox and Installer, during the update installation.

Removing the Update

To remove this security update, use the Add or Remove Programs item in Control Panel.

Note When you remove this update, you may be prompted to insert the 2007 Microsoft Office CD in the CD drive. Additionally, you may not have the option to uninstall the update from the Add or Remove Programs item in Control Panel. There are several possible causes for this issue. For more information about the removal, see Microsoft Knowledge Base Article 903771.

Verifying that the Update Has Been Applied

Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Start Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Microsoft SharePoint Server 2007 and Microsoft Groove Server 2007

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service Packs	The update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user intervention	For Microsoft XML Core Services 5.0 when installed with all affected 32-bit editions of Microsoft SharePoint Server 2007 and Microsoft Groove Server 2007: msxml5s2007-kb2687497-fullfile-x86-glb.exe /passive
For Microsoft XML Core Services 5.0 when installed with all affected 64-bit editions of Microsoft SharePoint Server 2007 and Microsoft Groove Server 2007: msxml5s2007-kb2687497-fullfile-x64-glb.exe /passive
Installing without restarting	For Microsoft XML Core Services 5.0 when installed with all affected 32-bit editions of Microsoft SharePoint Server 2007 and Microsoft Groove Server 2007: msxml5s2007-kb2687497-fullfile-x86-glb.exe /norestart
For Microsoft XML Core Services 5.0 when installed with all affected 64-bit editions of Microsoft SharePoint Server 2007 and Microsoft Groove Server 2007: msxml5s2007-kb2687497-fullfile-x64-glb.exe /norestart
Update log file	Not applicable
Further information	For detection and deployment, see the earlier section, Detection and Deployment Tools and Guidance.
Restart Requirement
Restart required?	In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart, see Microsoft Knowledge Base Article 887012.
HotPatching	Not applicable
Removal Information	Use Add or Remove Programs item in Control Panel.
File Information	See Microsoft Knowledge Base Article 2687497
Registry Key Verification	Not applicable

Supported Security Update Installation Switches

Switch	Description
/? or /help	Displays usage dialog.
/passive	Specifies passive mode. Requires no user interaction; users see basic progress dialogs but cannot cancel.
/quiet	Specifies quiet mode, or suppresses prompts, when files are being extracted.
/norestart	Suppresses restarting the system if the update requires a restart.
/forcerestart	Automatically restarts the system after applying the update, regardless of whether the update requires the restart.
/extract	Extracts the files without installing them. You are prompted for a target folder.
/extract:<path>	Overrides the install command that is defined by author. Specifies the path and name of the Setup.inf or .exe file.
/lang:<LCID>	Forces the use of a specific language, when the update package supports that language.
/log:<log file>	Enables logging, by both Vnox and Installer, during the update installation.

Removing the Update

To remove this security update, use the Add or Remove Programs item in Control Panel.

Verifying that the Update Has Been Applied

Microsoft Baseline Security Analyzer
To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.
File Version Verification
Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.
1. Click Start and then enter an update file name in the Start Search box.
2. When the file appears under Programs, right-click the file name and click Properties.
3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.
  Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.
  Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Other Information

Acknowledgments

Microsoft thanks the following for working with us to help protect customers:

Nicolas Gregoire of Agarri for reporting the MSXML XSLT Vulnerability (CVE-2013-0007)

Microsoft Active Protections Program (MAPP)

To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please go to the active protections websites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.

Support

How to obtain help and support for this security update

Help installing updates: Support for Microsoft Update
Security solutions for IT professionals: TechNet Security Troubleshooting and Support
Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center
Local support according to your country: International Support

Disclaimer

The information provided in the Microsoft Knowledge Base is provided 'as is' without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Revisions

V1.0 (January 8, 2013): Bulletin published.
V1.1 (January 8, 2013): Corrected download links for Microsoft XML Core Services 3.0 on Windows Server 2003 with SP2 for Itanium-based Systems and for Microsoft XML Core Services 6.0 when installed on Windows Server 2003 with SP2 for Itanium-based Systems. Added Server Core installation entries to Affected Software for Microsoft XML Core Services 4.0 when installed on Windows Server 2008 for 32-bit Systems Service Pack 2 and Microsoft XML Core Services 6.0 on Windows Server 2008 for 32-bit Systems Service Pack 2. These are informational changes only. Customers who have already successfully updated their systems do not need to take any action.
V1.2 (December 16, 2013): Revised bulletin to announce a detection change to correct an offering issue for Windows RT (2757638). This is a detection change only. There were no changes to the update files. Customers who have successfully installed the update do not need to take any action.

Built at 2014-04-18T13:49:36Z-07:00

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Vulnerability in XML Core Services Could Allow Remote Code Execution (2993958)

Published: November 11, 2014

Version: 1.0

Executive Summary

This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if a logged-on user visits a specially crafted website that is designed to invoke Microsoft XML Core Services (MSXML) through Internet Explorer. In all cases, however, an attacker would have no way to force users to visit such websites. Instead, an attacker would have to convince users to visit a website, typically by getting them to click a link in an email message or in an Instant Messenger request that takes users to the attacker's website.

This security update for Microsoft XML Core Services 3.0 is rated Critical for affected releases of Microsoft Windows clients and Important for affected releases of Microsoft Windows servers. For more information, see the Affected Software section.

The security update addresses the vulnerability by modifying the way that Microsoft XML Core Services parses XML content. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability.

For more information about this document, see Knowledge Base Article 2993958.

Affected Software

The following software versions or editions are affected. Versions or editions that are not listed are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see Microsoft Support Lifecycle.

Operating System	Component	Maximum Security Impact	Aggregate Severity Rating	Updates Replaced
Windows Server 2003
[Windows Server 2003 Service Pack 2](http://www.microsoft.com/downloads/details.aspx?familyid=9c155ddf-81ad-45e7-a32a-6c0d63d3cdb0) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
[Windows Server 2003 x64 Edition Service Pack 2](http://www.microsoft.com/downloads/details.aspx?familyid=dd2608d4-360e-4ac8-a40d-ffbb6787ce36) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
[Windows Server 2003 with SP2 for Itanium-based Systems](http://www.microsoft.com/downloads/details.aspx?familyid=d36dcc62-7d65-42ab-a088-9f339a78b931) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
Windows Vista
[Windows Vista Service Pack 2](http://www.microsoft.com/downloads/details.aspx?familyid=5381ce98-0888-4670-9e4a-b2773ec2f105) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Critical	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
[Windows Vista x64 Edition Service Pack 2](http://www.microsoft.com/downloads/details.aspx?familyid=06837728-7aa9-4d77-a656-06fe9dd10911) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Critical	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
Windows Server 2008
[Windows Server 2008 for 32-bit Systems Service Pack 2](http://www.microsoft.com/downloads/details.aspx?familyid=22fa4d32-dcf2-46ab-b9d9-97b10639ef80) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
[Windows Server 2008 for x64-based Systems Service Pack 2](http://www.microsoft.com/downloads/details.aspx?familyid=3c82b219-6259-4457-914a-a6500733033d) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
[Windows Server 2008 for Itanium-based Systems Service Pack 2](http://www.microsoft.com/downloads/details.aspx?familyid=599f3cdd-0269-4f8a-bb03-24ffe9bb5153) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
Windows 7
[Windows 7 for 32-bit Systems Service Pack 1](http://www.microsoft.com/downloads/details.aspx?familyid=d5b096b7-0bd8-4598-9a79-91ba08a98b6c) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Critical	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
[Windows 7 for x64-based Systems Service Pack 1](http://www.microsoft.com/downloads/details.aspx?familyid=93e180a1-b7b9-4153-8ab1-d536494d9263) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Critical	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
Windows Server 2008 R2
[Windows Server 2008 R2 for x64-based Systems Service Pack 1](http://www.microsoft.com/downloads/details.aspx?familyid=0a1b546f-5817-4f88-8c9d-3175e970f189) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
[Windows Server 2008 R2 for Itanium-based Systems Service Pack 1](http://www.microsoft.com/downloads/details.aspx?familyid=7c8882e7-80c3-4453-8768-0a910d6576dd) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
Windows 8 and Windows 8.1
[Windows 8 for 32-bit Systems](http://www.microsoft.com/downloads/details.aspx?familyid=e7e5d876-4fac-4121-84af-a61772252aa3) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Critical	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
[Windows 8 for x64-based Systems](http://www.microsoft.com/downloads/details.aspx?familyid=f2af12e6-5dc2-43c2-b184-dae8b71bdc76) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Critical	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
[Windows 8.1 for 32-bit Systems](http://www.microsoft.com/downloads/details.aspx?familyid=c08ab9f1-a9b6-4898-8ddc-62dbf43ccf21) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Critical	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
[Windows 8.1 for x64-based Systems](http://www.microsoft.com/downloads/details.aspx?familyid=d1d77ff5-4a70-4384-b513-cdb692edfe2d) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Critical	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
Windows Server 2012 and Windows Server 2012 R2
[Windows Server 2012](http://www.microsoft.com/downloads/details.aspx?familyid=da6f84a2-9262-43fa-b01a-b1dd4cc750ce) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
[Windows Server 2012 R2](http://www.microsoft.com/downloads/details.aspx?familyid=a3a7a5a1-b390-44aa-9c92-5208fe570d58) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
Windows RT and Windows RT 8.1
Windows RT^[1](2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Critical	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
Windows RT 8.1^[1](2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Critical	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
Server Core installation option
[Windows Server 2008 for 32-bit Systems Service Pack 2](http://www.microsoft.com/downloads/details.aspx?familyid=22fa4d32-dcf2-46ab-b9d9-97b10639ef80) (Server Core installation) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
[Windows Server 2008 for x64-based Systems Service Pack 2](http://www.microsoft.com/downloads/details.aspx?familyid=3c82b219-6259-4457-914a-a6500733033d) (Server Core installation) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
[Windows Server 2008 R2 for x64-based Systems Service Pack 1](http://www.microsoft.com/downloads/details.aspx?familyid=0a1b546f-5817-4f88-8c9d-3175e970f189) (Server Core installation) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2916036 in [MS14-005](http://go.microsoft.com/fwlink/?linkid=391022)
[Windows Server 2012](http://www.microsoft.com/downloads/details.aspx?familyid=da6f84a2-9262-43fa-b01a-b1dd4cc750ce) (Server Core installation) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)
[Windows Server 2012 R2](http://www.microsoft.com/downloads/details.aspx?familyid=a3a7a5a1-b390-44aa-9c92-5208fe570d58) (Server Core installation) (2993958)	Microsoft XML Core Services 3.0	Remote Code Execution	Important	2939576 in [MS14-033](http://go.microsoft.com/fwlink/?linkid=398119)

^[1]This update is available via [Windows Update](http://go.microsoft.com/fwlink/?linkid=21130) only.

Note Windows Technical Preview and Windows Server Technical Preview are affected. Customers running these operating systems are encouraged to apply the update, which is available via Windows Update.

Update FAQ

What version of Microsoft XML Core Services is installed on my system?
Some versions of Microsoft XML Core Services are included with Microsoft Windows; others are installed with non-operating system software from Microsoft or third-party providers. Some are also available as separate downloads. The following table shows the supported releases of Microsoft Windows and indicates which versions of Microsoft XML Core Services are included with the operating system, and which versions are installed when you install additional Microsoft or third-party software.

Operating System	MSXML 3.0 and MSXML 6.0	MSXML 4.0 and MSXML 5.0
Windows Server 2003	MSXML 3.0 shipped with operating system. MSXML 6.0 installed with additional software.	Installed with additional software
Windows Vista	Shipped with operating system	Installed with additional software
Windows Server 2008	Shipped with operating system	Installed with additional software
Windows 7	Shipped with operating system	Installed with additional software
Windows Server 2008 R2	Shipped with operating system	Installed with additional software
Windows 8	Shipped with operating system	Installed with additional software
Windows Server 2012	Shipped with operating system	Installed with additional software
Windows RT	Shipped with operating system	MSXML 4.0 installed with additional software. MSXML 5.0 not applicable.
Windows 8.1	Shipped with operating system	Installed with additional software
Windows Server 2012 R2	Shipped with operating system	Installed with additional software
Windows RT 8.1	Shipped with operating system	MSXML 4.0 installed with additional software. MSXML 5.0 not applicable.

**Note** For information on which versions are supported by Microsoft, see [Microsoft Knowledge Base Article 269238](https://support.microsoft.com/kb/269238). Severity Ratings and Vulnerability Identifiers ---------------------------------------------- The following severity ratings assume the potential maximum impact of the vulnerability. For information regarding the likelihood, within 30 days of this security bulletin's release, of the exploitability of the vulnerability in relation to its severity rating and security impact, please see the Exploitability Index in the [November bulletin summary](https://technet.microsoft.com/library/security/ms14-nov).

Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected Software	[MSXML Remote Code Execution Vulnerability - CVE-2014-4118](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2014-4118)	Aggregate Severity Rating
Windows Server 2003
Windows Server 2003 Service Pack 2 (2993958)	Important Remote Code Execution	Important
Windows Server 2003 x64 Edition Service Pack 2 (2993958)	Important Remote Code Execution	Important
Windows Server 2003 with SP2 for Itanium-based Systems (2993958)	Important Remote Code Execution	Important
Windows Vista
Windows Vista Service Pack 2 (2993958)	Critical Remote Code Execution	Critical
Windows Vista x64 Edition Service Pack 2 (2993958)	Critical Remote Code Execution	Critical
Windows Server 2008
Windows Server 2008 for 32-bit Systems Service Pack 2 (2993958)	Important Remote Code Execution	Important
Windows Server 2008 for x64-based Systems Service Pack 2 (2993958)	Important Remote Code Execution	Important
Windows Server 2008 for Itanium-based Systems Service Pack 2 (2993958)	Important Remote Code Execution	Important
Windows 7
Windows 7 for 32-bit Systems Service Pack 1 (2993958)	Critical Remote Code Execution	Critical
Windows 7 for x64-based Systems Service Pack 1 (2993958)	Critical Remote Code Execution	Critical
Windows Server 2008 R2
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (2993958)	Important Remote Code Execution	Important
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 (2993958)	Important Remote Code Execution	Important
Windows 8 and Windows 8.1
Windows 8 for 32-bit Systems (2993958)	Critical Remote Code Execution	Critical
Windows 8 for x64-based Systems (2993958)	Critical Remote Code Execution	Critical
Windows 8.1 for 32-bit Systems (2993958)	Critical Remote Code Execution	Critical
Windows 8.1 for x64-based Systems (2993958)	Critical Remote Code Execution	Critical
Windows Server 2012 and Windows Server 2012 R2
Windows Server 2012 (2993958)	Important Remote Code Execution	Important
Windows Server 2012 R2 (2993958)	Important Remote Code Execution	Important
Windows RT and Windows RT 8.1
Windows RT (2993958)	Critical Remote Code Execution	Critical
Windows RT 8.1 (2993958)	Critical Remote Code Execution	Critical
Server Core installation option
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) (2993958)	Important Remote Code Execution	Important
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) (2993958)	Important Remote Code Execution	Important
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) (2993958)	Important Remote Code Execution	Important
Windows Server 2012 (Server Core installation) (2993958)	Important Remote Code Execution	Important
Windows Server 2012 R2 (Server Core installation) (2993958)	Important Remote Code Execution	Important

MSXML Remote Code Execution Vulnerability - CVE-2014-4118

A remote code execution vulnerability exists when Microsoft XML Core Services (MSXML) improperly parses XML content, which can corrupt the system state in such a way as to allow an attacker to run arbitrary code. The vulnerability could allow remote code execution if a user opens a specially crafted file or webpage. Microsoft received information about this vulnerability through coordinated vulnerability disclosure. When this security bulletin was issued, Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers. The update addresses the vulnerability by modifying the way that Microsoft XML Core Services parses XML content.

Mitigating Factors

The following mitigating factors may be helpful in your situation:

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit MSXML through Internet Explorer, and then convince a user to view the website. This could also include compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by getting them to click a link in an email message or in an Instant Messenger request that takes users to the attacker's website, or by getting them to open an attachment sent through email.
An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
By default, all supported versions of Microsoft Outlook, Microsoft Outlook Express, and Windows Mail open HTML email messages in the Restricted sites zone. The Restricted sites zone, which disables script and ActiveX controls, helps reduce the risk of an attacker being able to use this vulnerability to execute malicious code. If a user clicks a link in an email message, the user could still be vulnerable to exploitation of this vulnerability through the web-based attack scenario.
By default, Internet Explorer on Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 runs in a restricted mode that is known as Enhanced Security Configuration. This mode mitigates this vulnerability. See the FAQ section for this vulnerability for more information about Internet Explorer Enhanced Security Configuration.

Workarounds

Microsoft has tested the following workarounds and states in the discussion whether a workaround reduces functionality:

Prevent MSXML 3.0 binary behaviors from being used in Internet Explorer
You can disable attempts to use a specific binary behavior in Internet Explorer by setting the kill bit for the behavior in the registry.
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To set the kill bits for CLSIDs with value of {f5078f39-c551-11d3-89b9-0000f81fe221} and {f6d90f16-9c73-11d3-b32e-00c04f990bb4}, paste the following text in a text editor such as Notepad. Then, save the file by using the .reg file name extension.

You can apply this .reg file to individual systems by double-clicking it. You can also apply it across domains by using Group Policy. For more information about Group Policy, see the TechNet article, Group Policy Collection.

Note:
You must restart Internet Explorer for your changes to take effect.

Impact of workaround. Websites that use the XMLHTTP 3.0 ActiveX controls may no longer display or function correctly in Internet Explorer.

How to undo the workaround. Delete the registry keys previously added in implementing this workaround.

FAQ

What is the component affected by the vulnerability?
The vulnerability affects Microsoft XML Core Services (MSXML), which allows customers who use JScript, Visual Basic Scripting Edition (VBScript), and Microsoft Visual Studio 6.0 to develop XML-based applications that provide interoperability with other applications that adhere to the XML 1.0 standard. For more information, see the Microsoft Developer Network article, MSXML.

What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could gain the same user rights as the logged-on user. If a user is logged on with administrative user rights, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

How could an attacker exploit the vulnerability?
An attacker could exploit the vulnerability by hosting a specially crafted website that is designed to invoke MSXML through Internet Explorer. This can also include compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these websites. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or in an Instant Messenger request that takes users to the attacker's website. It could also be possible to display specially crafted web content by using banner advertisements or by using other methods to deliver web content to affected systems.

Non-Microsoft web applications and services that utilize the MSXML library for parsing XML could also be vulnerable to this attack.

What systems are primarily at risk from the vulnerability?
This vulnerability requires that a user be logged on and visiting a website for any malicious action to occur. Therefore, any systems where Internet Explorer is used frequently, such as workstations or terminal servers, are at the most risk from this vulnerability.

I am running Internet Explorer on Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, or Windows Server 2012 R2. Does this mitigate this vulnerability?
Yes. By default, Internet Explorer on Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 runs in a restricted mode that is known as Enhanced Security Configuration. Enhanced Security Configuration is a group of preconfigured settings in Internet Explorer that can reduce the likelihood of a user or administrator downloading and running specially crafted web content on a server. This is a mitigating factor for websites that you have not added to the Internet Explorer Trusted sites zone.