Jan 2026: Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-20951 Published on January 13, 2026
Microsoft SharePoint Server Remote Code Execution Vulnerability
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2026-20951
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Affected Versions
Microsoft SharePoint Enterprise Server 2016:- Version 16.0.0 and below 16.0.5535.1001 is affected.
- Version 16.0.0 and below 16.0.10417.20083 is affected.
- Version 16.0.0 and below 16.0.19127.20442 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.