CVE-2026-34344
HighSummary
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.
Risk Assessment
This vulnerability could lead to unauthorized system access and privilege escalation, posing a serious security threat to the organization.
Recommendation
It is recommended to update the operating system to the latest version to mitigate this vulnerability and to monitor system access for potential privilege escalation attempts.
Other vulnerabilities in Windows Ancillary Function Driver for WinSock
See all- 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-2025-21418HighActively exploited
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability.
- CVE-2024-38193HighActively exploited
A vulnerability in the Windows Ancillary Function Driver for WinSock allows for elevation of privilege on Windows systems. The NVD description does not provide technical details or required user interaction.
- CVE-2026-88149High
A double free vulnerability in the Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
- CVE-2026-83738High
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
- CVE-2026-70245High
A type confusion in the Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
- CVE-2026-70237High
Use after free vulnerability in the Windows Ancillary Function Driver for WinSock. An authorized attacker can elevate privileges locally.
- CVE-2026-70225High
Type confusion (access of resource using incompatible type) in the Windows Ancillary Function Driver for WinSock. An authorized attacker can elevate privileges locally.
Original NVD description (English source)
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS