CVE-2026-20951
HIGHMicrosoft SharePoint Server - Unauthenticated Remote Code Execution
Title source: llmDescription
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
patch
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20951
Scores
CVSS v3
7.8
EPSS
0.0010
EPSS Percentile
26.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-20
Status
published
Products (6)
Microsoft/Microsoft SharePoint Enterprise Server 2016
16.0.0 - 16.0.5535.1001
Microsoft/Microsoft SharePoint Server 2019
16.0.0 - 16.0.10417.20083
Microsoft/Microsoft SharePoint Server Subscription Edition
16.0.0 - 16.0.19127.20442
microsoft/sharepoint_server
2016
microsoft/sharepoint_server
2019
microsoft/sharepoint_server
< 16.0.19127.20442
Published
Jan 13, 2026
Tracked Since
Feb 18, 2026