RCE in Microsoft Sharepoint Enterprise Server 2016
CVE-2021-31181
Microsoft SharePoint Remote Code Execution Vulnerability
Vulnerability class: RCE (Remote Code Execution)
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: 0.288 (98.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.300 · newest: 0.288 · change: -0.012
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 Enterprise Server — versions 2016
- Microsoft Sharepoint Foundation — versions 2013
- Microsoft Sharepoint Server — versions 2019
Weakness classification (CWE)
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31181 (Patch, Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-21-573/ (VDB Entry, Third Party Advisory)
- packetstormsecurity.com/files/163208/Microsoft-SharePoint-Unsafe-Control-And-Vi… (Exploit, VDB Entry, Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
Frequently asked questions
- What is CVE-2021-31181?
- CVE-2021-31181 is a high-severity vulnerability in Microsoft Sharepoint Enterprise Server 2016, classified under Code Injection. CVSS score: 8.8/10. Published 2021-05-11.
- How severe is CVE-2021-31181?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-31181 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.