Description of the security update for SharePoint Server Subscription Edition: October 14, 2025 (KB5002786)

Summary

Important:

If you're running 2013-type workflows, you must install 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 SharePoint remote code execution vulnerability. To learn more about the vulnerability, see the following security advisories:

Notes:

This is build 16.0.19127.20262 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:

Fixes a compatibility issue that occurs if the Business Data Connectivity (BDC) external list is hosted in an Oracle database.
To resolve update installation issues, the Write permission is now denied by default for the WSS_WPG and IIS_IUSRS groups on the LAYOUTS folder.
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
Fixes a hybrid search issue. You can now configure the search service account without needing the Local Administrator privilege.
Adds missing assemblies that Microsoft.Data.SqlClient requires in SharePoint Workflow Manager.
Fixes a navigation issue that prevents the TAB key from moving between web part sections.
Adds encryption settings to handle an unattached content database.
Fixes an issue in which the Search Query Logging timer job doesn't release the SQL connections to the Search LinksStore database.

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 (KB5002786)

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 5002784.

File hash information

File name	SHA256 hash
uber-subscription-kb5002786-fullfile-x64-glb.exe	1E63A00F7AC82554376E90EFE6021665234C965D1E1C2143D5047E5E7220AB3E

File information

Download the list of files that are included in security update 5002786.

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security