Windows 11 25h2
CVE-2026-20918
HIGH
Severity by source
AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Primary rating from Vendor (microsoft) · only source for this CVE.
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
AnalysisAI
Windows Management Services on Windows 10 and 11 contains a race condition in shared resource synchronization that enables authenticated local users to escalate privileges to system level. The vulnerability affects multiple Windows versions including 22h2, 21h2, and 25h2 builds, with no patch currently available.
Technical ContextAI
Classified as CWE-362 (Race Condition). Affects the Windows Management component of Windows 10 1809. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
RemediationAI
Monitor vendor advisories for a patch.
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Same weakness CWE-362 – Race Condition
View allSame technique Race Condition
View allShare
External POC / Exploit Code
Leaving vuln.today