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 memory management, leading to a use-after-free condition that can be exploited to gain higher privileges on the system.

Impact

Exploitation of this vulnerability could allow an attacker to gain SYSTEM privileges.

Remediation

Users can apply the security updates provided in the Microsoft Knowledge Base articles KB5063950, KB5063906, KB5063947, KB5063888, and KB5063948. These updates are available through the Microsoft Update Catalog.