NULL pointer dereference in Windows Server and Windows - CVE-2026-24293

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Main Vulnerability Database Vulnerabilities #VU123751

NULL pointer dereference in Windows Server and Windows - CVE-2026-24293

Published: March 10, 2026


Vulnerability identifier: #VU123751
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-24293
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Windows Server
Windows

Detailed vulnerability description

The vulnerability allows a local suer to escalate privileges on the system.

The vulnerability exists due to a NULL pointer dereference error in Windows Ancillary Function Driver for WinSock. A local user can pass specially crafted data to the application and gain elevated privileges on the target system.


How to mitigate CVE-2026-24293

Install updates from vendor's website.

Sources