Description of the security update for SharePoint Server Subscription Edition: September 09, 2025 (KB5002784)

Summary

This security update resolves a Microsoft SharePoint remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2025-54897.

Notes:

This is build 16.0.19127.20100 of the security update package.
To apply this security update, you must have the release version of Microsoft SharePoint Server Subscription Edition installed on the computer.

Improvements and fixes

This security update introduces the SharePoint Server Subscription Edition Version 25H2 feature update. This feature update will be included in all SharePoint Server Subscription Edition public updates going forward. For more information about this feature update, see New and improved features in SharePoint Server Subscription Edition Version 25H2.

This security update contains improvements and fixes for the following nonsecurity issues in SharePoint Server Subscription Edition:

You can now use the Test-DefenderAndAmsiWorkProperly cmdlet in SharePoint Management Shell to verify that all Windows Defender components are installed and active, and that SharePoint AMSI (Antimalware Scan Interface) integration is functioning correctly.
In order to use workflows in SharePoint Server, you must now have the latest update for SharePoint Workflow Manager installed.
To strengthen security in SharePoint Server, users in the WSS_WPG group are now restricted from running administrative processes, such as the SharePoint Products Configuration Wizard (Psconfig). For more information, see Account permissions and security settings in SharePoint Servers.
Updates the Machine Key Rotation Job schedule from monthly to weekly and make sure that it's automatically triggered after each update cycle finishes.
Enhances the AMSI Filter feature module. Changes the default setting to be always on.
Fixes an issue in which all matching requests are immediately blocked when throttling rules are configured.
Updates the NuGet package Microsoft.Exchange.OfficeGraph.SpoolsScaleOutMapper to version 5.0.5.
Fixes an issue in which some characters cannot be displayed correctly in email messages if they use the GB18030 character set for outgoing email.

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 Subscription Edition (KB5002784)

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 5002773.

File hash information

File name	SHA256 hash
uber-subscription-kb5002784-fullfile-x64-glb.exe	2093F0E812792C730CDBE9FE1E709E8DCF4A38A919E4F69CB8300B5881EC1C16

File information

Download the list of files that are included in security update 5002784.

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security