CVE-2026-20951

CWE-20 — Improper Input Validation5 documents5 sources
Severity
7.8HIGH
EPSS
0.1%
top 79.53%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Microsoft Microsoft Sharepoint Enterprise Server 2016Microsoft Microsoft Sharepoint Server 2019Microsoft Microsoft Sharepoint Server Subscription Edition+1 more
Timeline
PublishedJan 13

Description

Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶NVDmicrosoft/sharepoint_server< 16.0.19127.20442+2
▶CVEListV5microsoft/microsoft_sharepoint_server_201916.0.0 — 16.0.10417.20083
▶CVEListV5microsoft/microsoft_sharepoint_enterprise_server_201616.0.0 — 16.0.5535.1001
▶CVEListV5microsoft/microsoft_sharepoint_server_subscription_edition16.0.0 — 16.0.19127.20442

🔴Vulnerability Details

2
GHSA
GHSA-gm7r-gh5f-5ghf: Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally↗2026-01-13
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CVEList
Microsoft SharePoint Server Remote Code Execution Vulnerability↗2026-01-13
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📋Vendor Advisories

1
Microsoft
Microsoft SharePoint Server Remote Code Execution Vulnerability↗2026-01-13
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🕵️Threat Intelligence

1
Wiz
CVE-2026-20951 Impact, Exploitability, and Mitigation Steps | Wiz↗
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