MSRC compact vulnerability detail

CVE-2026-25187 · Winlogon Elevation of Privilege Vulnerability

Improper link resolution before file access ('link following') in Winlogon allows an authorized attacker to elevate privileges locally.

Severity
Important
Impact
Elevation of Privilege
CVSS
7.8 base · 6.8 temporal
Release
2026-03-10
Signals
Winlogon Elevation of Privilege Exploited: No Publicly disclosed: No Exploitability: Exploitation More Likely
CWE
Patch Diff
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Description
Improper link resolution before file access ('link following') in Winlogon allows an authorized attacker to elevate privileges locally.
FAQ / Articles
Winlogon Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Winlogon allows an authorized attacker to elevate privileges locally.
FAQ
What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.