Windows Server 2022
CVE-2026-24293
HIGH
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (microsoft) · only source for this CVE.
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows Ancillary Function Driver for WinSock affects Windows 11 24H2, Windows Server 2022, and Windows Server 2025, allowing authenticated local attackers to gain system-level access through null pointer dereference. The vulnerability requires valid user credentials and local access but no user interaction to exploit. No patch is currently available.
Technical ContextAI
Classified as CWE-476 (NULL Pointer Dereference). Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
RemediationAI
Monitor vendor advisories for a patch.
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Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Null Pointer Dereference
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External POC / Exploit Code
Leaving vuln.today