Summary
Important:
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If you're running 2013-type workflows, you mustinstall the August 2025 update for SharePoint Workflow Manager to your farm before you install this cumulative update.
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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 Microsoft Outlook spoofing vulnerability and Microsoft Word spoofing vulnerability. To learn more about the vulnerabilities, see the following security advisories:
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Microsoft Common Vulnerabilities and Exposures CVE-2026-21511
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Microsoft Common Vulnerabilities and Exposures CVE-2026-21260
Notes:
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This is build 16.0.10417.20097 of the security update package.
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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 Language Pack:
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Fixes the repeated failures of w3wp process that are caused by missing Dynamic Link Libraries (DLL).
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Fixes an issue in which the PDF upload in SharePoint Server Subscription Edition (SPSE) causes the w3wp process to stop responding.
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Fixes an issue in which the "Timer Service Recycle" job is nonfunctional due to dependency on the removed STSADM.EXE.
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Fixes an accessibility issue in which the discernible text isn't available for checkbox and expandable controls under the Site pages heading.
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Fixes an issue in which the SharePoint 2010 style workflow doesn't run in the SharePoint Timer Service.
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Fixes an issue that blocks zero downtime updating.
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 5002823.
File hash information
|
File name |
SHA256 hash |
|
|---|---|---|
|
wssloc2019-kb5002836-fullfile-x64-glb.exe |
E9968F3066071305146C42D6FDC2A5BF21AB3AB1FA0F319ACD10964EC9824889 |
File information
Download the list of files that are included in security update 5002836.
Information about protection and security
Protect yourself online: Windows Security support
Learn how we guard against cyber threats: Microsoft Security
