CVE-2024-30094 is a heap-based buffer overflow vulnerability identified in the Windows Routing and Remote Access Service (RRAS) component of Microsoft Windows 10 Version 1809 (build 10.0.17763.0). The vulnerability is categorized under CWE-122, indicating improper handling of memory buffers leading to overflow conditions. This flaw allows an attacker to remotely execute arbitrary code on the affected system by sending specially crafted network packets to the RRAS service. The vulnerability has a CVSS 3.1 base score of 7.8, reflecting high severity due to its potential to compromise confidentiality, integrity, and availability of the system. The attack vector is local network (AV:L), requiring no privileges (PR:N), but does require user interaction (UI:R), which might involve the user initiating or responding to network communication that triggers the vulnerability. The scope is unchanged (S:U), meaning the exploit affects only the vulnerable component without extending to other system components. The vulnerability is currently published with no known exploits in the wild and no publicly available patches at the time of reporting. RRAS is a Windows service that provides routing and remote access capabilities, often used in enterprise environments for VPNs, dial-up connections, and network routing. Exploitation could allow attackers to execute arbitrary code with system-level privileges, potentially leading to full system compromise, data theft, or disruption of network services. The vulnerability's presence in an older Windows 10 version (1809) means that organizations running legacy systems are particularly vulnerable. The lack of a patch link suggests that mitigation relies on vendor updates when released, or temporary workarounds such as disabling RRAS or restricting network access to the service. Given the nature of RRAS, exposure to untrusted networks increases risk, especially in environments where remote access services are critical. The vulnerability was reserved in March 2024 and published in June 2024, indicating recent discovery and disclosure. Organizations should monitor for updates from Microsoft and prepare to deploy patches promptly once available.

The impact of CVE-2024-30094 on European organizations can be significant, especially for those still operating Windows 10 Version 1809 systems with RRAS enabled. Successful exploitation allows remote code execution, potentially granting attackers full control over affected machines. This can lead to unauthorized access to sensitive data, disruption of network services, and lateral movement within corporate networks. Critical infrastructure sectors such as energy, finance, healthcare, and government agencies that rely on RRAS for VPN or routing services are at heightened risk. The vulnerability's requirement for user interaction and local network access somewhat limits remote exploitation from the internet but does not eliminate risk from insider threats or compromised internal networks. The absence of known exploits in the wild provides a window for proactive defense, but the high severity score underscores the urgency for mitigation. European organizations with legacy systems may face compliance and operational risks if the vulnerability is exploited, including potential data breaches and service outages. The impact is exacerbated in environments where patch management is slow or where RRAS exposure is not tightly controlled.

1. Monitor Microsoft security advisories closely and apply official patches for Windows 10 Version 1809 RRAS as soon as they become available. 2. If patching is delayed, consider disabling the RRAS service on affected systems where it is not essential to reduce the attack surface. 3. Restrict network access to RRAS ports and services using firewalls and network segmentation to limit exposure to trusted hosts only. 4. Implement strict network monitoring and intrusion detection systems to identify anomalous traffic targeting RRAS or unusual remote access attempts. 5. Conduct an inventory of all Windows 10 1809 systems and prioritize remediation or upgrade to supported Windows versions with ongoing security updates. 6. Educate users about the risks of interacting with unsolicited network communications that could trigger the vulnerability. 7. Employ endpoint detection and response (EDR) solutions to detect and respond to suspicious activities indicative of exploitation attempts. 8. Review and tighten RRAS configuration settings to minimize unnecessary features and services that could be exploited. 9. Develop and test incident response plans specifically addressing potential exploitation of RRAS vulnerabilities. 10. Collaborate with network and security teams to ensure layered defenses are in place around remote access infrastructure.