Windows CVE-2026-20867
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Management Services affects Windows Server 2019, Windows 11 24h2, and Windows Server 2025 through improper synchronization of shared resources, enabling authenticated users to gain elevated system privileges. The vulnerability exploits a race condition that an attacker can trigger without user interaction, though no patch is currently available.
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RemediationAI
Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.
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