CVE-2026-70342

HighCVSS 8.1

Published: 08/09/2026(UTC)Updated: 09/09/2026(UTC)Translated: 09/09/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Elevated risk

0.87%

57th percentile - higher than 57% of all known CVEs

Summary

Use after free in Windows Ancillary Function Driver for WinSock allows an unauthorized attacker to elevate privileges over a network.

Risk Assessment

An attacker could exploit the flaw to gain elevated privileges, potentially leading to system takeover.

Recommendation

Apply the latest Windows security updates.

Other vulnerabilities in Windows Ancillary Function Driver for WinSock

See all

CVE-2026-34344High
The Windows Ancillary Function Driver for WinSock has a vulnerability related to resource access using an incompatible type ('type confusion'), allowing an authorized attacker to elevate privileges locally.
CVE-2026-20810High
A vulnerability in the Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. The issue involves freeing memory not on the heap.
CVE-2026-68820HighActively exploited
Use-after-free in Windows Ancillary Function Driver for WinSock. An authorized attacker can elevate privileges locally.
CVE-2026-20860High
A type confusion vulnerability in the Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-50349High
A race condition in the Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-70307High
A use-after-free vulnerability in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-61348High
A use-after-free vulnerability in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-57093High
A use-after-free vulnerability in the Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-50462High
The Windows Ancillary Function Driver for WinSock has an external control of file name or path vulnerability, allowing an authorized attacker to elevate privileges locally.
CVE-2026-50312Medium
Use-after-free vulnerability in the Windows Ancillary Function Driver for WinSock. Allows an authorized attacker to elevate privileges locally.

Original NVD description (English source)

Use after free in Windows Ancillary Function Driver for WinSock allows an unauthorized attacker to elevate privileges over a network.