CVE-2025-53807 is a race condition vulnerability classified under CWE-362, found in the Microsoft Graphics Component of Windows 10 Version 1809 (build 17763.0). The vulnerability arises from improper synchronization when multiple threads or processes concurrently access shared resources, leading to a race condition. This flaw can be exploited by an attacker with low-level local privileges to elevate their rights on the system. Specifically, the attacker can manipulate the timing of resource access to gain higher privileges, potentially achieving SYSTEM-level control. The vulnerability does not require user interaction but does require local access, limiting remote exploitation. The CVSS v3.1 base score is 7.0, indicating high severity, with metrics AV:L (local attack vector), AC:H (high attack complexity), PR:L (low privileges required), UI:N (no user interaction), and full impact on confidentiality, integrity, and availability. Although no public exploits are known at this time, the vulnerability poses a significant risk to systems that remain unpatched. The lack of available patches at the time of reporting means organizations must rely on interim mitigations. This vulnerability is particularly concerning for environments where Windows 10 1809 remains in use, including legacy systems in enterprise and government sectors. The race condition could allow attackers to bypass security controls and execute arbitrary code with elevated privileges, potentially leading to full system compromise.

For European organizations, the impact of CVE-2025-53807 could be severe, especially in sectors relying on legacy Windows 10 1809 systems such as manufacturing, healthcare, government, and critical infrastructure. Successful exploitation allows local attackers to escalate privileges, potentially leading to unauthorized access to sensitive data, disruption of services, and deployment of further malware or ransomware. The vulnerability undermines system integrity and availability, increasing the risk of operational downtime and data breaches. Organizations with remote or shared workstation environments are particularly vulnerable if local access controls are weak. Given the high confidentiality impact, sensitive European Union data protection regulations (e.g., GDPR) could be implicated if breaches occur. The absence of known exploits currently provides a window for mitigation, but the presence of this vulnerability in widely used systems necessitates urgent attention to prevent future exploitation. Legacy systems that cannot be upgraded pose a continued risk, potentially exposing critical European infrastructure to targeted attacks.

1. Apply official Microsoft patches immediately once they become available for Windows 10 Version 1809 to address this race condition vulnerability. 2. Until patches are released, restrict local access to affected systems by enforcing strict access controls and limiting user privileges. 3. Employ application whitelisting and endpoint detection and response (EDR) tools to monitor and block suspicious local privilege escalation attempts. 4. Conduct thorough audits of systems running Windows 10 1809 to identify and isolate legacy devices. 5. Where possible, upgrade affected systems to supported Windows versions with active security updates. 6. Implement network segmentation to limit lateral movement from compromised local accounts. 7. Educate IT staff and users about the risks of local privilege escalation vulnerabilities and the importance of reporting unusual system behavior. 8. Maintain up-to-date backups and incident response plans to mitigate potential damage from exploitation. 9. Monitor security advisories from Microsoft and trusted sources for updates on patches and exploitation activity. 10. Consider deploying additional synchronization and concurrency controls in custom applications interacting with graphics components if applicable.