Description of the security update for SharePoint Enterprise Server 2016: March 12, 2024 (KB5002559)

Summary

This security update resolves a Microsoft SharePoint Server remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2024-21426.

Notes:

• This is build 16.0.5439.1000 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 contains an improvement and a fix for the following nonsecurity issue in SharePoint Enterprise Server 2016:

• Allows users to disable SharePoint’s Content Security Policy (CSP) HTTP header in SharePoint Pages. If you don’t want to enable the SharePoint CSP HTTP header in SharePoint Pages, you can run the following cmdlets in PowerShell:

Add-PSSnapin Microsoft.SharePoint.PowerShell
$farm = Get-SPFarm
$farm.EnableCSPHeaderForPage = $false
$farm.Update()

• Fixes an unexpected exception in the Newsfeed feature.

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 5002559 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 5002541.

File hash information

File name	SHA256 hash
sts2016-kb5002559-fullfile-x64-glb.exe	660E62B2F27C59213A0825636E1B32F57565B27FA90F85D4252FF2D17482E4E9

File information

Download the list of files that are included in security update 5002559.

Information about protection and security

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