Description of the security update for SharePoint Server 2019: July 14, 2026 (KB5002883)

Applies To
SharePoint Server 2019

Summary

Important

  • If you're currently running SharePoint Workflow Manager, you must install the SharePoint Workflow Manager (KB5002799) to your farm before you install this cumulative update.
  • If you're currently running the Classic version of Workflow Manager, you have to enable the debug flag in order to continue using Workflow Manager:
      $farm = Get-SPFarm
      $farm.ServerDebugFlags.Add(53601)
      $farm.update()
      iisreset

This security update resolves a Microsoft Word Remote Code Execution vulnerability, Microsoft SharePoint Server Spoofing vulnerability, Microsoft SharePoint Elevation of Privilege vulnerability, and Microsoft Word Information Disclosure vulnerability. To learn more about the vulnerabilities, see the following security advisories:

Note

  • This is build 16.0.10417.20175 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:

  • Fixes an issue in which pages don't load because certain user controls are flagged as unsafe for security. After you apply this fix, you can explicitly trust the affected controls by configuring the custom farm property (AllowedTagPrefixesWhichAreNotWebControlsList).

  • Fixes an issue in which SharePoint 2010 workflows don't initiate after the June 2026 update is installed.

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.

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 5002874.

File hash information

File name SHA256 hash
sts2019-kb5002883-fullfile-x64-glb.exe 8DFB3B0C94BAF82909F69FAEFDD1AFF3FA9431EEDD065E1D0419CCE209BE0603

File information

Download the list of files that are included in security update 5002883

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security