Windows CVE-2026-20861
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
Windows Management Services on Windows 10 and Windows Server 2022 contain a race condition in shared resource handling that permits authenticated local attackers to escalate privileges to system level. The vulnerability stems from improper synchronization during concurrent operations and affects multiple Windows versions including Windows 10 22H2 and 1809. …
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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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