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-2021-1713.

Note To apply this security update, you must have the release version of Service Pack 1 for Microsoft Office Web Apps Server 2013 installed on the computer.

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.

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 4486760.

File hash information

File name

SHA1 hash

SHA256 hash

WacServer2013-kb4493171-fullfile-x64-glb.exe

3B8542880EAB45B8F714164A94B92E0C9F53F1E0

E7AAE058D5009A0E430D95DFA2C2013FE809A5C572F89EF7D68050B1ECDECB27


File information

Download the list of files that are included in security update 4493171.

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security

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