Windows CVE-2026-20826
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/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 Tablet Windows User Interface (TWINUI) Subsystem allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows Tablet UI (TWINUI) subsystem on Windows 10, Windows Server 2022, and Windows Server 2025 stems from improper synchronization of shared resources, enabling authenticated local attackers to gain elevated privileges. The race condition vulnerability affects multiple Windows versions and currently has no available patch.
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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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