Vulnerability · Published Jul 14, 2021 · Assigned by microsoft
CVE-2021-34520Microsoft SharePoint Server Remote Code Execution Vulnerability
High 8.1
In plain English
A high-severity security flaw in Microsoft SharePoint Enterprise Server 2016 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.4% (higher than 91% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)4.4%top 8.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Microsoft SharePoint Server Remote Code Execution Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 – before 16.0.5188.1000 |
| Microsoft | Microsoft SharePoint Foundation 2013 Service Pack 1 | 15.0.0 – before 15.0.5363.1000 |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 – before 16.0.10376.20001 |
References
- Microsoft SharePoint Server Remote Code Execution Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34520 x_refsource_MISC, x_transferred
- https://www.zerodayinitiative.com/advisories/ZDI-21-828/ x_refsource_MISC, x_transferred