Windows CVE-2026-20926
HIGHCVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation in Windows SMB Server (versions 10 22h2, 11 23h2, and 11 25h2) stems from improper synchronization of shared resources, allowing authenticated network attackers to elevate privileges. The race condition vulnerability requires specific timing conditions but carries high impact across confidentiality, integrity, and availability. …
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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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