EUVD-2026-29587
GHSA-4mq6-f26v-8f5g
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Kernel across Windows 10, Windows 11 (versions 22H3 through 26H1), and Windows Server 2022 allows authenticated local attackers to gain SYSTEM-level privileges through heap corruption. Microsoft has released patches addressing this CWE-122 heap-based buffer overflow. …
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RemediationAI
Within 24 hours: Verify current Windows OS versions and patch levels across all affected systems (Windows 10, Windows 11 versions 22H3-26H1, Windows Server 2022). Within 7 days: Deploy Microsoft's released security patch to all vulnerable endpoints using your standard patch management process; prioritize systems with high-privilege user accounts or sensitive data access. …
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External POC / Exploit Code
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