HIGH Microsoft Corporation Vulnerability Alert

Product:

Windows Ancillary Function Driver for WinSock

Summary

Access of resource using incompatible type type confusion in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. This vulnerability can lead to significant security risks if exploited. It is crucial for users to be aware of this issue to protect their systems.

Details

Severity Base Score CVE
HIGH 7.8 CVE-2026-34344

Exploitation

An attacker with local access can exploit this vulnerability by triggering the type confusion in the Windows Ancillary Function Driver for WinSock. By doing so, they can manipulate the system’s memory and gain elevated privileges, allowing them to execute arbitrary code or perform unauthorized actions on the affected system.

Affected Products

  • Windows Ancillary Function Driver for WinSock: Vulnerable to type confusion leading to privilege escalation.

Mitigation

To mitigate this vulnerability, users should apply the latest security updates provided by Microsoft. Regularly updating systems and monitoring for unusual activity can help prevent exploitation. It is also advisable to limit local access to systems to reduce the risk of unauthorized exploitation.

References