Description of the security update for SharePoint Server 2016: November 11, 2025 (KB5002805)

Summary

Important:

If you're currently running SharePoint Workflow Manager, 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 SharePoint 2013 Workflow, you have to enable the debug flag in order to continue using it. $farm = Get-SPFarm

$farm.ServerDebugFlags.Add(53601)

$farm.update()

iisreset

This security update resolves Microsoft SharePoint Remote Code Execution Vulnerability. To learn more about the vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2025-62204.

Notes:

This is build 16.0.5526.1001 of the security update package.
To apply this security update, you must have the release version of Microsoft SharePoint Server 2016 installed on the computer.

This public update delivers Feature Pack 2 for SharePoint Server 2016. Feature Pack 2 contains the following feature:

SharePoint Framework (SPFx)

This public update also delivers all the features that were included in Feature Pack 1 for SharePoint Server 2016, including:

Administrative Actions Logging
MinRole enhancements
SharePoint Custom Tiles
Hybrid Taxonomy
OneDrive API for SharePoint on-premises
OneDrive for Business modern user experience (available to Software Assurance customers)

The OneDrive for Business modern user experience requires an active Software Assurance contract at the time that the experience is enabled, either by installation of the public update or by manual enablement. If you don't have an active Software Assurance contract at the time of enablement, you must turn off the OneDrive for Business modern user experience.

For more information, see the following Microsoft Learn articles:

Improvements and fixes

This security update contains improvements and fixes for the following nonsecurity issue in SharePoint Server 2016.

Removes the denied Write permission for the WSS _WPG and IIS_IURS groups to resolve failures that occur during newer update installations.

Known issues in this update

Users may see “4gab5" event tags logged in the SharePoint Unified Logging System (ULS) logs when they access sitedirectorysettings.aspx using ‘set other host’. This issue occurs because of the enhanced security that restricts access to sitedirectorysettings.aspx to the current farm host.

To work around this issue, the farm administrator can add the new domain to the AdditionalValidSPFarmHosts setting in the farm by running the following PowerShell commands:

add-pssnapin *

$f = get-spfarm

$f.AddGenericAllowedListValue("AdditionalValidSPFarmHosts", "your_additional_farm_host")

$f.update()

iisreset

Note: Make sure that the setting host is safe before you follow the instructions to add the new domain.

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 2016 (KB5002805).

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 5002788.

File hash information

File name	SHA256 hash
sts2016-kb5002805-fullfile-x64-glb.exe	F62892373F4FAEA4756C0F05BCEE9E5A2D4D280E280C0AC411DCD695C1E9B7C9

File information

Download the list of files that are included in security update 5002805.

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security