Updates for SharePoint Server 2019 (January 2025 CU)

19.1.2025    |    komentáře   komentářů: 0

A new cumulative update (January 2025 CU) has been released for SharePoint Server 2019.

SP Build:
16.0.10416.20041 (Language independent CU)
16.0.10416.20041 (Language dependent CU)

SharePoint 2019 CU – KB articles describing the CU:

  • KB 5002666 – January 2025 Update for SharePoint Server 2019 (language independent)
  • KB 5002667 – January 2025 Update for SharePoint Server 2019 (language dependent)

SharePoint Server 2019 CU – CU download links:

After installation, remember to run the SharePoint 2019 Products Configuration Wizard or the following command:

PSConfig.exe -cmd upgrade -inplace b2b -wait -cmd applicationcontent -install -cmd installfeatures -cmd secureresources -cmd services -install

Important notes

Always install both packages in this order:

  1. language independent components (core CU)
  2. language-dependent components (language CU)

For language-dependent packages, the language you select does not matter because each package contains updates for all languages.

If you install a new language pack on a SharePoint Server 2019 farm, you must reinstall the language-dependent update afterwards.

Remember to keep Distributed Cache updated as well as SharePoint. See How to update Distributed Cache correctly (in Czech).

Note for this CU:

KB 5002666 and KB 5002667 require the release version of SharePoint Server 2019 to be installed.

Included fixes and improvements

The following overview summarizes the fixes and improvements in this CU based on the official Microsoft KB articles.

SharePoint Server 2019

KB 5002666 and KB 5002667 address remote code execution and spoofing in SharePoint Server. The advisories are CVE-2025-21344, CVE-2025-21348, CVE-2025-21393.

The language-independent package KB 5002666 includes this SharePoint Server 2019 improvement:

  • Adds the User-Agent header to hybrid search requests sent to Search Content Service (SCS).

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