Microsoft Windows RRAS Heap-Based Buffer Overflow Vulnerability Allowing Remote Code Execution

A heap-based buffer overflow vulnerability has been identified in the Windows Routing and Remote Access Service (RRAS). This vulnerability allows an authorized attacker to execute code remotely over the network. It affects several versions of Windows Server, including 2012, 2008 R2, 2016, 2022, and 2019, as well as Windows Server 2025. The vulnerability arises when an authenticated attacker tricks a domain-joined user into sending a request to a malicious server via the RRAS Snap-in, potentially leading to arbitrary code execution on the user's system.

Impact

Exploitation of this vulnerability could result in remote code execution on the affected system.

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 KB5063880, KB5063871, KB5063877, KB5063906, KB5063947, and KB5063950.