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Microsoft Security Bulletin MS13-075 - Important

Vulnerability in Microsoft Office IME (Chinese) Could Allow Elevation of Privilege (2878687)

Published: | Updated:

Version: 1.1

General Information

Executive Summary

This security update resolves a privately reported vulnerability in Microsoft Office IME (Chinese). The vulnerability could allow elevation of privilege if a logged on attacker launches Internet Explorer from the toolbar in Microsoft Pinyin IME for Simplified Chinese. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full administrative rights. Only implementations of Microsoft Pinyin IME 2010 are affected by this vulnerability. Other versions of Simplified Chinese IME and other implementations of IME are not affected.

This security update is rated Important for all supported editions of Microsoft Office 2010 where Microsoft Pinyin IME 2010 is installed. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerability by correcting the manner in which the Microsoft Office IME (Chinese) exposes configuration options not designed to run on the secure desktop. 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. Customers can configure automatic updating to check online for updates from Microsoft Update by using the Microsoft Update service. Customers who have automatic updating enabled and configured to check online for updates from Microsoft Update typically 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 from Microsoft Update 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 at the earliest opportunity 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.

Knowledge Base Article

Knowledge Base Article2878687
File informationYes
SHA1/SHA2 hashesYes
Known issuesNone

Affected and Non-Affected Software

The following software has 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

Microsoft Office Suite and Other SoftwareComponentMaximum Security ImpactAggregate Severity RatingBulletins Replaced by this Update
Microsoft Office Suites and Components
Microsoft Office 2010 Service Pack 1 (32-bit editions) Microsoft Pinyin IME 2010 (32-bit version)
Elevation of Privilege Important None
Microsoft Office 2010 Service Pack 1 (64-bit editions)Microsoft Pinyin IME 2010 (64-bit version)
Elevation of PrivilegeImportantNone

Non-Affected Software 

Office and Other Software
Microsoft Office 2007 Service Pack 3
Microsoft Office 2010 Service Pack 2 (32-bit editions)
Microsoft Office 2010 Service Pack 2 (64-bit editions)
Microsoft Office 2013 (32-bit editions)
Microsoft Office 2013 (64-bit editions)
Microsoft Office 2013 RT

Update FAQ

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

Chinese IME Vulnerability – CVE-2013-3859

Update Information

Detection and Deployment Tools and Guidance

Security Update Deployment

Other Information


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

  • Wei Wang of VulnHunt for reporting the Chinese IME Vulnerability (CVE-2013-3859)

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.


How to obtain help and support for this security update


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.


  • V1.0 (September 10, 2013): Bulletin published.
  • V1.1 (December 18, 2013): Clarified that only implementations of Microsoft Pinyin IME 2010 are affected by the vulnerability. However, this update may be offered to systems with a non-vulnerable IME. This helps to maintain consistency for shared files across Office products. For more information, see the Update FAQ.