Description of the security update for SharePoint Enterprise Server 2016: April 9, 2024 (KB5002583)

Summary

This security update resolves a Microsoft SharePoint Server spoofing vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2024-26251.

Notes:

• This is build 16.0.5443.1000 of the security update package.
• To apply this security update, you must have the release version of Microsoft SharePoint Enterprise 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:
• New features included in the November 2016 Public Update for SharePoint Server 2016 (Feature Pack 1)
• New features included in the September 2017 Public Update for SharePoint Server 2016 (Feature Pack 2)

Improvements and fixes

This security update fixes an issue in which duplicate configuration elements are added to SharePoint Web.config files every time that you run SharePoint upgrade. This activity eventually causes those files to exceed the Web.config file size limitation that’s configured in IIS. This issue generates multiple “HTTP 500.19 - Cannot read configuration file because it exceeds the maximum file size” error messages when you browse a SharePoint website. This fix removes the existing duplicate configuration elements and prevents future duplicates from being added.This security update also contains a fix for the following nonsecurity issue in SharePoint Enterprise Server 2016. To fix this issue completely, you have to install KB 5002050 and KB 5002545 together with this update.

• Fixes an issue in which OneNote cannot safely unload LibletAPI across multiple DLLs it owns. After you install this update, LibletAPI can be safely uninitialized in various OneNote DLLs by uninitializing in a locked, reference-counted code block.

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 5002583 for the 64-bit version of SharePoint Enterprise Server 2016

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 5002559.

File hash information

File name	SHA256 hash
sts2016-kb5002583-fullfile-x64-glb.exe	60A716873B4D4131E2E32F3CB6BAA4166A2A3998E75055CCD970486BD2362118

File information

Download the list of files that are included in security update 5002583.

Information about protection and security

Protect yourself online: Windows Security supportLearn how we guard against cyber threats: Microsoft Security