Description of the security update for SharePoint Server 2019: August 12, 2025 (KB5002769)

Summary

This security update resolves a Microsoft SharePoint remote code execution vulnerability, Microsoft SharePoint elevation of privilege vulnerability, Microsoft Word remote code execution vulnerability, and Microsoft Word information disclosure vulnerability. To learn more about the vulnerabilities, see the following security advisories:

Notes:

This is build 16.0.10417.20041 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 an improvement and a fix for the following nonsecurity issue in SharePoint Server 2019. To get the improvement and fix the issue completely, you have to install KB 5002770 together with this update.

Adds a warning when deleting a Cloud Search Service Application (Cloud SSA) if users have not verified that the hybrid indexes are removed.
Fixes an issue in which users cannot use Business Connectivity Services (BCS) together with the DotNetAssembly or WebService system type, because these system types are not enabled by default. To support Business Data Connectivity (BDC) models that are based on the DotNetAssembly or WebService system type, enable the support by running the following commands in SharePoint Management Shell if you trust your BDC models:$farm = Get-SPFarm$farm.ServerDebugFlags.Add(57007)$farm.ServerDebugFlags.Add(57008)$farm.update()iisreset

Known issues in this update

After you install this update, you may experience an issue when you configure calendar overlay settings. For more information, see "Invalid EWS URL: <url>" error in Overlay settings in CalendarService.ashx (KB5064829).

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 (KB5002769)

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 5002754.

File hash information

File name	SHA256 hash
sts2019-kb5002769-fullfile-x64-glb.exe	191582C256B687B919553736E948280D4248198C2B5B9B40B20A0E5838E45CBC

File information

Download the list of files that are included in security update 5002769.

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security