Summary

This security update resolves a Microsoft Excel remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2021-34501 and Microsoft Common Vulnerabilities and Exposures CVE-2021-34518.

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: July 13, 2021.

Security update replacement information

This security update replaces previously released security update 5001956.

File hash information

File name

SHA256 hash

WacServer2013-kb5001986-fullfile-x64-glb.exe

62C9B5575CAB4378A73975CBDF8C4D3731998B2DACD1AEB9F734B87E0CB2C8A2

File information

Download the list of files that are included in security update 5001986.

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security

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