Vulnerability in Microsoft Sharepoint Enterprise Server 2016
CVE-2021-28474
Microsoft SharePoint Server Remote Code Execution Vulnerability
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.508 (98.9th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 98.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.510 · newest: 0.508 · change: -0.003
Affected products
- Microsoft Sharepoint Enterprise Server 2016 — versions 16.0.0
- Microsoft Sharepoint Foundation 2013 Service Pack 1 — versions 15.0.0
- Microsoft Sharepoint Server 2019 — versions 16.0.0
- Microsoft Sharepoint Foundation — versions 2013
- Microsoft Sharepoint Server — versions 2016, 2019
Weakness classification (CWE)
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28474 (Patch, Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-21-574/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28474?
- CVE-2021-28474 is a high-severity vulnerability in Microsoft Sharepoint Enterprise Server 2016, classified under CWE-436. CVSS score: 8.8/10. Published 2021-05-11.
- How severe is CVE-2021-28474?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-28474 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.