Winlogon Elevation of Privilege Vulnerability
43Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck.
ssvc Actcvss 7.8epss 3.2%
from disclosure to weapon
Published on NVDMar 10
VulnCheck+34d
exploitation probability
3.2%top 13% of all CVEs
observed exploitation
yesVulnCheck
Improper link resolution before file access ('link following') in Winlogon allows an authorized attacker to elevate privileges locally.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Windows 10 Version 1607Microsoft · Windows 10 Version 1809Microsoft · Windows 10 Version 21H2Microsoft · Windows 10 Version 22H2Microsoft · Windows 11 version 22H3Microsoft · Windows 11 Version 23H2Microsoft · Windows 11 Version 24H2Microsoft · Windows 11 Version 25H2Microsoft · Windows 11 version 26H1Microsoft · Windows Server 2012Microsoft · Windows Server 2012 R2Microsoft · Windows Server 2012 R2 (Server Core installation)Microsoft · Windows Server 2012 (Server Core installation)Microsoft · Windows Server 2016Microsoft · Windows Server 2016 (Server Core installation)Microsoft · Windows Server 2019Microsoft · Windows Server 2019 (Server Core installation)Microsoft · Windows Server 2022Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft · Windows Server 2025Microsoft · Windows Server 2025 (Server Core installation)References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25187https://www.vicarius.io/vsociety/posts/cve-2026-25187-detection-script-winlogon-elevation-of-privilege-vulnerabilityhttps://www.vicarius.io/vsociety/posts/cve-2026-25187-mitigation-script-winlogon-elevation-of-privilege-vulnerability