CVE-2025-24035 is a vulnerability classified under CWE-591, which pertains to sensitive data storage in improperly locked memory. This flaw exists in Microsoft Windows 10 Version 1507 (build 10.0.10240.0), specifically within the Windows Remote Desktop Services component. The vulnerability allows an unauthorized attacker to execute arbitrary code remotely over the network without requiring any authentication or user interaction. The root cause is that sensitive data used during Remote Desktop sessions is stored in memory regions that are not properly locked, potentially allowing attackers to access or manipulate this data to gain code execution capabilities. The CVSS v3.1 score of 8.1 reflects a high severity, with the attack vector being network-based (AV:N), requiring high attack complexity (AC:H), no privileges (PR:N), and no user interaction (UI:N). The impact spans confidentiality, integrity, and availability, all rated high. Although no known exploits are currently reported in the wild, the vulnerability's nature and severity make it a critical concern for affected systems. The vulnerability was reserved in January 2025 and published in March 2025, with no public patches currently linked, indicating that mitigation may rely on system upgrades or configuration changes. Remote Desktop Services are widely used for remote administration and access, making this vulnerability particularly dangerous if exploited in enterprise environments.

For European organizations, the impact of CVE-2025-24035 can be significant, especially for those still operating legacy Windows 10 Version 1507 systems. Successful exploitation could lead to full remote code execution, allowing attackers to compromise sensitive data, disrupt services, or move laterally within networks. This threatens confidentiality by exposing sensitive session data, integrity by enabling unauthorized code execution, and availability by potentially causing service outages. Sectors relying heavily on Remote Desktop Services, such as finance, healthcare, government, and critical infrastructure, face elevated risks. The lack of authentication and user interaction requirements lowers barriers for attackers with network access, increasing the threat surface. Although the attack complexity is high, targeted attacks or advanced persistent threats could leverage this vulnerability to gain footholds in European networks. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the urgency for mitigation.

To mitigate CVE-2025-24035, European organizations should prioritize upgrading affected systems from Windows 10 Version 1507 to a supported and patched Windows version, as this build is outdated and no longer supported by Microsoft. If upgrading is not immediately feasible, organizations should restrict network access to Remote Desktop Services using firewalls, VPNs, or network segmentation to limit exposure. Enforce strict access controls and monitor RDS logs for unusual activity. Disable Remote Desktop Services on systems where it is not required. Employ endpoint detection and response (EDR) solutions to detect anomalous behavior indicative of exploitation attempts. Regularly review and apply any security advisories or patches released by Microsoft related to this vulnerability. Additionally, implement memory protection mechanisms and system hardening best practices to reduce the attack surface. Conduct vulnerability scanning and penetration testing to identify and remediate vulnerable systems proactively.