Below are the security fixes for the SharePoint OnPrem versions released this month.
SharePoint Server 2016:
- KB 5002685 – SharePoint Server 2016 (language independent)
Microsoft Support recommends to install the complete February 2025 CU for SharePoint 2016 rather than individual security fixes.
SharePoint Server 2019:
- KB 5002678 – SharePoint Server 2019 (language independent)
Microsoft Support recommends to install the complete February 2025 CU for SharePoint 2019 rather than individual security fixes.
SharePoint Server Subscription Edition:
- KB 5002681 – SharePoint Server Subscription Edition
This security fix is identical with February 2025 CU for SharePoint Server Subscription Edition.
Office Online Server:
- KB 5002679 – Office Online Server
More information:
Please ensure to have a look at the SharePoint Patching Best Practices before applying new fixes.
Security Vulnerabilities fixed in this PU
| Vulnerability | SP 2016 | SP 2019 | SP SE | OOS | Impact | Max Severity |
|---|---|---|---|---|---|---|
| CVE-2025-21381 | x | Remote Code Execution | Critical | |||
| CVE-2025-21386 | x | Remote Code Execution | Important | |||
| CVE-2025-21387 | x | Remote Code Execution | Important | |||
| CVE-2025-21390 | x | Remote Code Execution | Important | |||
| CVE-2025-21394 | x | Remote Code Execution | Important | |||
| CVE-2025-21400 | x | x | x | Remote Code Execution | Important |
See the Security Update Guide below for more details about the relevant fixes: