CVE-2025-62452 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 flaw arises from improper handling of memory buffers in RRAS, which can be triggered by specially crafted network packets sent by an attacker with authorized access. This vulnerability is classified under CWE-122, indicating a heap-based buffer overflow that can lead to arbitrary code execution. The CVSS v3.1 base score is 8.0, reflecting high severity due to the network attack vector (AV:N), low attack complexity (AC:L), requirement for privileges (PR:L), and user interaction (UI:R). The scope is unchanged (S:U), but the impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H). Exploitation allows an attacker to execute arbitrary code remotely, potentially leading to full system compromise. Although no known exploits are currently in the wild, the vulnerability poses a significant risk to systems running this specific Windows version with RRAS enabled. The absence of patches at the time of disclosure increases the urgency for mitigation. RRAS is commonly used to provide VPN and routing services, making this vulnerability particularly relevant for organizations relying on remote access infrastructure.

For European organizations, the impact of CVE-2025-62452 can be severe. Successful exploitation could lead to remote code execution, allowing attackers to gain control over affected systems, exfiltrate sensitive data, disrupt services, or move laterally within networks. Organizations using Windows 10 Version 1809 with RRAS enabled—especially in sectors such as finance, healthcare, government, and critical infrastructure—face elevated risks. The vulnerability compromises confidentiality, integrity, and availability, potentially resulting in data breaches, operational downtime, and reputational damage. Given the network-based attack vector and low complexity, attackers could exploit this vulnerability remotely, increasing the threat surface. The requirement for privileges and user interaction somewhat limits exploitation but does not eliminate risk, particularly in environments with multiple authorized users or where social engineering could be employed. The lack of known exploits currently provides a window for proactive defense, but the absence of patches necessitates immediate mitigation efforts to prevent future attacks.

1. Apply official patches from Microsoft immediately once they become available to address CVE-2025-62452. 2. Until patches are released, disable the Routing and Remote Access Service (RRAS) on Windows 10 Version 1809 systems if it is not essential to business operations. 3. Restrict network access to RRAS services using firewall rules and network segmentation to limit exposure to authorized and trusted hosts only. 4. Monitor network traffic for anomalous or unexpected RRAS-related activity, including unusual connection attempts or malformed packets. 5. Implement strict access controls and multi-factor authentication for users authorized to interact with RRAS to reduce the risk of privilege abuse. 6. Conduct regular vulnerability scanning and penetration testing focused on RRAS and related services to identify potential exploitation attempts. 7. Educate users about the risks of social engineering and the importance of cautious interaction with network services requiring user interaction. 8. Maintain up-to-date asset inventories to identify all systems running Windows 10 Version 1809 with RRAS enabled for targeted mitigation.