CVE-2026-20951
High
Description
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Microsoft Sharepoint Server
PublishedJan 13, 2026
First seenJan 13, 2026
Weakness typeCWE-20Improper input validation
How to fix
Update
- microsoft sharepoint_server16.0.19127.20442 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft sharepoint_server | v < 16.0.19127.20442, 2016, 2019 | 16.0.19127.20442 |
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