Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network
Description
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network
AI Analyst Comment
Remediation
Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.
Description Summary:
A heap-based buffer overflow in the Windows Routing and Remote Access Service (RRAS) allows an authenticated attacker to execute arbitrary code over a network.
Executive Summary:
A heap-based buffer overflow vulnerability in Microsoft Windows RRAS allows authenticated attackers to achieve remote code execution, posing a significant threat to server integrity.
Vulnerability Details
CVE-ID: CVE-2025-50162
Affected Software: Microsoft Windows Routing and Remote Access Service (RRAS)
Affected Versions: Windows Server 2008 R2 Service Pack 1: 6.1.7601.0 up to (excluding) 6.1.7601.27872; Windows Server 2008 Service Pack 2: 6.0.6003.0 up to (excluding) 6.0.6003.23471; Windows Server 2012: 6.2.9200.0 up to (excluding) 6.2.9200.25622.
Vulnerability: This is a heap-based buffer overflow (CWE-122) within the Routing and Remote Access Service. The vulnerability requires the attacker to be authenticated with low privileges to trigger the flaw, which can then be leveraged to execute code remotely.
Business Impact
The ability for an authenticated attacker to execute arbitrary code on a server hosting RRAS represents a critical security risk. Successful exploitation could lead to full system compromise, unauthorized data access, and lateral movement within the corporate network. With a CVSS score of 8.0, this vulnerability is categorized as High severity, necessitating prompt attention to prevent potential service disruption or breach.
Remediation Plan
Immediate Action: Administrators must apply the security updates provided in the official Microsoft Security Update Guide immediately to remediate the affected RRAS components.
Proactive Monitoring: Security teams should monitor network traffic and event logs for unusual activity or unexpected service crashes associated with the RRAS process.
Compensating Controls: If immediate patching is not feasible, restrict network access to the RRAS service to trusted internal IP addresses only, and employ host-based intrusion detection systems to identify malicious patterns.
Exploitation Status
Public Exploit Available: Unknown.
Analyst Notes: As of August 13, 2025, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw's requirement for authentication limits the attack surface, but the potential for remote code execution remains a high-priority concern for server infrastructure.
Analyst Recommendation
Given the potential for remote code execution within core server infrastructure, this vulnerability should be prioritized within the standard patch management cycle. Organizations running legacy Windows Server versions must ensure they apply the relevant security updates to mitigate the risk of exploitation. Confirm successful installation of the patches by verifying the build numbers of the affected service components.