Microsoft Brokering File System Privilege Escalation Vulnerability

A use-after-free vulnerability has been identified in the Microsoft Brokering File System, allowing an authorized attacker to locally elevate privileges. This vulnerability arises from improper memory management, which creates a race condition that could be exploited to gain SYSTEM privileges.

Impact

Exploitation of this vulnerability could lead to unauthorized privilege escalation, allowing an attacker to gain SYSTEM privileges.

Remediation

Users can apply the security updates provided by Microsoft to address this vulnerability. These security updates are available through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5063875, KB5063878, KB5063899, and the Windows Server 2022 Security Update.