EUVD-2026-22499CVSS VectorNVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
6DescriptionNVD
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation via use-after-free in Windows Ancillary Function Driver for WinSock (AFD.sys) affects all supported Windows versions from Windows 10 1607 through Windows 11 26H1 and Windows Server 2012-2025. Authenticated local attackers with low privileges can exploit memory corruption to gain SYSTEM-level access, though high attack complexity suggests reliable exploitation requires sophisticated techniques. …
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RemediationAI
Within 24 hours: Identify all Windows 10, Windows 11, and Windows Server 2012-2025 systems in your environment and verify current patch levels. Within 7 days: Apply vendor-released patches to all affected systems prioritizing servers and high-value workstations; test patches in non-production environments first due to kernel-level changes. …
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