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-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.
- CVE-2026-34346Medium
Cleartext transmission of sensitive information in Windows Ancillary Function Driver for WinSock allows an authorized attacker to disclose information locally.
- CVE-2026-45638High
Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to 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.