Description of the security update for Office 2010: January 12, 2021

Summary

This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2021-1715 and Microsoft Common Vulnerabilities and Exposures CVE-2021-1716.

Note To apply this security update, you must have the release version of Service Pack 2 for Office 2010 installed on the computer.Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2010. It doesn’t apply to the Office 2010 Click-to-Run editions, such as Microsoft Office 2010 Home and Student (see What version of Office am I using?).

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

• Download security update 4493142 for the 32-bit version of Office 2010
• Download security update 4493142 for the 64-bit version of Office 2010

More information

Security update deployment information

For deployment information about this update, see security update deployment information: January 12, 2021.

Security update replacement information

This security update replaces previously released security update 4486738.

File hash information

File name	SHA1 hash	SHA256 hash
KB24286772010-kb4493142-fullfile-x86-glb.exe	001C75B7BCC16F257ABDB8D15D655A539CE14BA3	DCAA4B020AC38C45BA1137BC9ED34A2155E35BC31377C6CAE59BF84DF6C82A0D
KB24286772010-kb4493142-fullfile-x64-glb.exe	DDA3C213AFDBD540C15DAA5138E32F5E5F93F551	7C5BEF9B2E17491F0B374AE05F28F95D894AC0B4946990473E1197FFCCCA36D0

File informationThe English (United States) version of this software update installs files that have the attributes that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

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For all supported x86-based versions of Office 2010

File identifier	File name	File version	File size	Date	Time
wwlibcxm.dll	wwlibcxm.dll	14.0.7264.5000	19,053,168	16-Dec-2020	02:23

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For all supported x64-based versions of Office 2010

File identifier	File name	File version	File size	Date	Time
wwlibcxm.dll	wwlibcxm.dll	14.0.7264.5000	24,545,904	16-Dec-2020	02:25

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