Microsoft Windows Ancillary Function Driver for WinSock Privilege Escalation Vulnerability

A use-after-free vulnerability has been identified in the Windows Ancillary Function Driver for WinSock. This vulnerability allows an authorized attacker to locally elevate privileges. The issue arises from improper handling of memory, leading to a race condition that can be exploited to gain SYSTEM privileges.

Impact

Exploitation of this vulnerability could allow an authorized user to gain elevated privileges, potentially leading to unauthorized access or modifications within the system.

Remediation

Users can apply the security update for this vulnerability, which is available through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5094122, KB5094123, KB5094126, KB5093998, KB5095051, and KB5094127.