Vulnerability · Published May 11, 2021 · Assigned by microsoft
CVE-2021-31181Microsoft SharePoint Remote Code Execution Vulnerability
High 8.8
In plain English
A high-severity code injection in Microsoft SharePoint Enterprise Server 2016 from Microsoft. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 29.0% (higher than 98% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)29.0%top 1.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Metasploit
Official description
Microsoft SharePoint Remote Code Execution Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 – before 16.0.5161.1000 |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 – before 16.0.10374.20000 |
| Microsoft | Microsoft SharePoint Foundation 2013 Service Pack 1 | 15.0.0 – before 15.0.5345.1000 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31181 x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-21-573/ x_refsource_MISC
- http://packetstormsecurity.com/files/163208/Microsoft-SharePoint-Unsafe-Control-And-ViewState-Remote-Code-Execution.html x_refsource_MISC
- https://packetstorm.news/files/id/163208 exploit