Description of the security update for SharePoint Server 2019: October 14, 2025 (KB5002796)

Summary

Important:

If you're running 2013-type workflows, you mustinstall the August 2025 update for SharePoint Workflow Manager to your farm before you install this cumulative update.
If you're currently running the Classic version of Workflow Manager, you must enable the debug flag to continue using it.$farm = Get-SPFarm

$farm.ServerDebugFlags.Add(53601)

$farm.update()

iisreset

This security update resolves a Microsoft Excel Information Disclosure Vulnerability, Microsoft Word Remote Code Execution Vulnerability, and Microsoft SharePoint Remote Code Execution Vulnerability. To learn more about the vulnerabilities, see the following security advisories:

Notes:

This is build 16.0.10417.20059 of the security update package.
To apply this security update, you must have the release version of Microsoft SharePoint Server 2019 installed on the computer.

Improvements and fixes

This security update contains improvements and fixes for the following nonsecurity issue in SharePoint Server 2019.

Enables the AMSI body scan over HTTP request.

Workaround

You might have to use the following workarounds if these situations apply to you.

To prevent all matching requests from being blocked, make sure that you configure the correct threshold settings.
If you experience a break in workflow functionality within Classic Workflow Manager, you can restore operations by running the following commands in the SharePoint Management Shell:$farm = Get-SPFarm$farm.ServerDebugFlags.Add(53601)$farm.update()iisreset

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 for Microsoft SharePoint Server 2019 (KB5002796)

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 5002775.

File hash information

File name	SHA256 hash
sts2019-kb5002796-fullfile-x64-glb.exe	3865CBCE17DAE4A57A6FA1C79310E58967EC5BDE6FCC9261DAAB494B0041EEE6

File information

Download the list of files that are included in security update 5002796.

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security