HIGH Microsoft Corporation Vulnerability Alert

Product:

Windows Ancillary Function Driver for WinSock

Summary

A race condition in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. This occurs due to concurrent execution using a shared resource with improper synchronization. The vulnerability can lead to significant security risks if exploited.

Details

Severity Base Score CVE
HIGH 7.8 CVE-2026-26168

Exploitation

To exploit this vulnerability, an attacker must have local access to the system and be authorized. By executing a specially crafted sequence of operations that takes advantage of the race condition, the attacker can manipulate the shared resource, leading to privilege escalation.

Affected Products

  • Windows Ancillary Function Driver for WinSock – Vulnerable to privilege escalation due to improper synchronization.

Mitigation

To mitigate this vulnerability, it is recommended to apply the latest security updates provided by Microsoft. Regularly updating systems and monitoring for unusual activity can also help reduce the risk of exploitation.

References