What is CVE-2025-21400?

CVE-2025-21400 is a high-severity vulnerability in Microsoft Sharepoint Enterprise Server 2016, classified under Improper Authorization. CVSS score: 8.0/10. Published 2025-02-11.

How severe is CVE-2025-21400?

High severity. CVSS v3 base score is 8.0 out of 10.

Auth bypass in Microsoft Sharepoint Enterprise Server 2016

CVE-2025-21400

Microsoft SharePoint Server Remote Code Execution Vulnerability

EPSS: 0.298 (98.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft Sharepoint Enterprise Server 2016 — versions 16.0.0
Microsoft Sharepoint Server 2019 — versions 16.0.0
Microsoft Sharepoint Server Subscription Edition — versions 16.0.0
Microsoft Sharepoint_server — versions 2016, 2019

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

secure@microsoft.com (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-21400?: CVE-2025-21400 is a high-severity vulnerability in Microsoft Sharepoint Enterprise Server 2016, classified under Improper Authorization. CVSS score: 8.0/10. Published 2025-02-11.
How severe is CVE-2025-21400?: High severity. CVSS v3 base score is 8.0 out of 10.