CVE-2025-59515 is a use-after-free vulnerability classified under CWE-416 affecting the Windows Broadcast DVR User Service component in Microsoft Windows 10 Version 1809 (build 10.0.17763.0). This vulnerability allows an attacker with authorized local access and low privileges to exploit a memory management flaw where a resource is freed but later accessed, leading to undefined behavior. Exploiting this flaw enables the attacker to elevate privileges on the affected system, potentially gaining SYSTEM-level access. The vulnerability does not require user interaction but does require the attacker to have some level of local access, making remote exploitation infeasible without prior compromise. The CVSS v3.1 base score is 7.0, indicating high severity, with attack vector local, attack complexity high, privileges required low, no user interaction, and impacts on confidentiality, integrity, and availability all rated high. No public exploits or patches are currently available, but the vulnerability is publicly disclosed and should be addressed promptly. The Broadcast DVR User Service is responsible for recording gameplay and broadcasting features, and its compromise could allow attackers to bypass security controls and execute arbitrary code with elevated privileges.

For European organizations, the impact of CVE-2025-59515 can be significant, especially for those still operating Windows 10 Version 1809 in production environments. Successful exploitation can lead to full system compromise, allowing attackers to access sensitive data, modify system configurations, install persistent malware, or disrupt critical services. This is particularly concerning for sectors with stringent data protection requirements such as finance, healthcare, and government. The vulnerability’s requirement for local access limits remote exploitation but increases risk from insider threats or attackers who have already gained limited footholds. Legacy systems in industrial control, manufacturing, and public administration may be vulnerable due to slower patch cycles. The lack of available patches means organizations must rely on compensating controls until updates are released. Overall, the vulnerability poses a high risk to confidentiality, integrity, and availability of critical systems within European enterprises.

1. Prioritize upgrading affected systems from Windows 10 Version 1809 to a supported and patched Windows version to eliminate exposure. 2. Until patches are available, restrict local user permissions rigorously to minimize the number of users with low-level access that could exploit this vulnerability. 3. Implement strict application whitelisting and endpoint protection to detect and block suspicious privilege escalation attempts. 4. Monitor system logs and security events for unusual activity related to the Broadcast DVR User Service or privilege escalation indicators. 5. Use network segmentation to isolate legacy systems and limit lateral movement opportunities. 6. Employ multi-factor authentication and strong access controls to reduce the risk of initial local compromise. 7. Educate IT staff and users about the risks of local privilege escalation vulnerabilities and insider threats. 8. Prepare incident response plans specifically addressing privilege escalation scenarios to enable rapid containment and remediation.