CVE-2025-60715 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 arises from improper handling of memory buffers within RRAS, which can be triggered by an attacker who has authorized network access to the service. Exploiting this flaw allows the attacker to execute arbitrary code remotely, potentially leading to full system compromise. The CVSS 3.1 base score is 8.0, reflecting high severity due to the vulnerability's impact on confidentiality, integrity, and availability. The attack vector is network-based (AV:N), with low attack complexity (AC:L), but requires privileges (PR:L) and user interaction (UI:R). The scope remains unchanged (S:U), meaning the exploit affects only the vulnerable component. The vulnerability was reserved on September 26, 2025, and published on November 11, 2025. No patches or known exploits are currently available, indicating a window of exposure. RRAS is commonly used to provide VPN and routing services, often critical in enterprise environments. This vulnerability could be leveraged by attackers to gain elevated privileges, execute malicious payloads, and disrupt network services. The lack of known exploits suggests that proactive mitigation is essential to prevent future attacks.

For European organizations, the impact of CVE-2025-60715 can be significant, particularly for those relying on Windows 10 Version 1809 systems with RRAS enabled for remote access or routing services. Successful exploitation could lead to unauthorized code execution, allowing attackers to compromise sensitive data, disrupt network operations, or establish persistent footholds within corporate networks. Critical sectors such as finance, healthcare, government, and telecommunications, which often use RRAS for secure remote connectivity, are at heightened risk. The vulnerability threatens confidentiality by exposing sensitive information, integrity by allowing code execution and potential data manipulation, and availability by enabling denial-of-service conditions. Given the high CVSS score and network attack vector, the threat could facilitate lateral movement and privilege escalation within affected networks, amplifying the damage. The absence of patches increases the urgency for organizations to implement compensating controls to mitigate exposure.

1. Immediately restrict RRAS exposure by limiting network access to trusted hosts and networks only, using firewall rules and network segmentation. 2. Disable RRAS services on Windows 10 Version 1809 systems where it is not strictly necessary to reduce the attack surface. 3. Implement strict access controls and multi-factor authentication for accounts authorized to interact with RRAS to minimize the risk of privilege abuse. 4. Monitor network traffic and system logs for unusual or suspicious RRAS activity, including unexpected connection attempts or anomalous process behavior. 5. Employ endpoint detection and response (EDR) solutions capable of detecting exploitation attempts or abnormal memory usage patterns related to heap overflows. 6. Plan and prioritize upgrading affected systems to supported Windows versions with active security updates, as Windows 10 Version 1809 is an older release with limited ongoing support. 7. Stay alert for official patches or security advisories from Microsoft and apply them promptly once available. 8. Conduct regular vulnerability assessments and penetration testing focusing on RRAS and related network services to identify and remediate weaknesses proactively.