CVE-2025-59515 in Windows
Summary
by MITRE • 11/11/2025
Use after free in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 01/05/2026
The vulnerability identified as CVE-2025-59515 represents a critical use-after-free flaw within the Windows Broadcast DVR User Service component that enables local privilege escalation for authenticated attackers. This issue resides in the Windows operating system's broadcast television recording functionality, specifically affecting the user service responsible for managing digital video recording operations. The flaw manifests when the system fails to properly manage memory references after objects have been freed, creating opportunities for malicious code execution and privilege elevation.
The technical implementation of this vulnerability involves improper memory management within the Broadcast DVR User Service where allocated memory structures are accessed after being deallocated by the system. When legitimate user processes interact with the service, particularly during operations involving broadcast recording configuration or session management, the service fails to validate object references properly. This creates a scenario where an attacker can manipulate the service into freeing memory structures while still maintaining references to them, leading to potential code execution in the context of the service process. The vulnerability is classified under CWE-416 which specifically addresses use-after-free conditions in memory management.
From an operational perspective, this vulnerability presents a significant risk to systems running affected Windows versions as it requires only local authentication to exploit. An attacker who has already gained user-level access to a system can leverage this flaw to escalate privileges to SYSTEM level, effectively gaining complete control over the affected machine. The impact extends beyond individual system compromise as this vulnerability can be exploited to establish persistent backdoors or facilitate lateral movement within network environments. The attack vector is particularly concerning because it does not require network access or specialized external tools beyond standard user-level privileges.
Security professionals should note that this vulnerability aligns with ATT&CK technique T1068 which covers the exploitation of local privilege escalation opportunities. The attack chain typically involves initial access through legitimate user credentials followed by exploitation of the use-after-free condition to gain elevated privileges. Mitigation strategies should include immediate deployment of Microsoft security patches, implementation of least privilege principles, and enhanced monitoring of Broadcast DVR User Service processes for anomalous behavior. System administrators should also consider disabling unnecessary broadcast recording functionality and implementing application whitelisting policies to prevent exploitation attempts. The vulnerability underscores the importance of regular security updates and proper memory management practices in system services, particularly those handling multimedia and recording operations that may be less frequently audited for security flaws.