Description of the security update for Office Online Server: August 8, 2023 (KB5002435)

Summary

This security update resolves a Microsoft Office remote code execution vulnerability and a Microsoft Excel remote code execution vulnerability. To learn more about the vulnerabilities, see the following security advisories:

• Microsoft Common Vulnerabilities and Exposures CVE-2023-35371
• Microsoft Common Vulnerabilities and Exposures CVE-2023-36896

Notes:

• This is build 16.0.10401.20022 of the security update package.
• To apply this security update, you must have the release version of Microsoft Office Online Server 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. To install the update, follow the installation instructions on the download page.

• Download security update 5002435 for the 64-bit version of Office Online Server

More information

Security update deployment information

For deployment information about this update, see Deployments - Security Update Guide.

Security update replacement information

This security update replaces previously released security update 5002421.

File hash information

File name	SHA256 hash
wacserver2019-kb5002435-fullfile-x64-glb.exe	724DA5ABC2327A77C687CFDD6784B82F69D808BC56870E6A7F96F2C336B26FF1

File information

Download the list of files that are included in security update 5002435.

Information about protection and security

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