EUVD-2026-29590
GHSA-58r5-75pr-v3g7
CVSS VectorNVD
CVSS:3.1/AV:L/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 Win32K - GRFX allows an authorized attacker to elevate privileges locally.
AnalysisAI
Race condition in Windows Win32K graphics subsystem enables authenticated local users with low privileges to escalate to SYSTEM-level access on Windows 10 (1607 through 22H2), Windows 11 (all versions through 26H1), and Windows Server 2012. Microsoft has released patches through their monthly security update cycle (MSRC advisory CVE-2026-34331). …
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RemediationAI
Within 24 hours: Identify all Windows 10 (1607-22H2), Windows 11 (all versions through 26H1), and Windows Server 2012 systems in your environment using SCCM, Intune, or asset management tools. Within 7 days: Deploy Microsoft's official patches via WSUS, Windows Update, or manual MSRC advisory CVE-2026-34331 remediation; verify patch installation on at least 90% of affected endpoints. …
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