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 update provided by Microsoft to address this vulnerability. This security update is available through the Microsoft Update Catalog. For specific update details, refer to the Microsoft Knowledge Base articles KB5087538, KB5087544, KB5087539, KB5087420, KB5089548, KB5087424, KB5087470, KB5087471, KB5087537, and KB5089549.