Microsoft Windows TCP/IP Heap-Based Buffer Overflow Vulnerability Allowing Privilege Escalation

A heap-based buffer overflow vulnerability has been identified in the Windows TCP/IP stack. This vulnerability allows an unauthorized attacker to elevate privileges over an adjacent network. It affects multiple versions of Windows 10, Windows 11, and Windows Server 2022, 2025 and 2025 (Server Core installation).

Impact

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

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 KB5094125, KB5094126, KB5094127, KB5094128 and KB5093998.