Auth bypass in Microsoft Sharepoint Enterprise Server 2016
CVE-2025-21400
Microsoft SharePoint Server Remote Code Execution Vulnerability
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.345 (98.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.345 · newest: 0.345 · change: 0.000
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)
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21400 (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.