A critical logic error in the Android BaseBundle component permits local privilege escalation, posing a significant risk to device security and data integrity.

The vulnerability is an elevation of privilege flaw located within multiple functions of BaseBundle.java, which can be triggered by a local attacker with low privileges to achieve arbitrary code execution.

The ability for a local attacker to gain elevated privileges on an Android device threatens the fundamental security model of the operating system. With a CVSS score of 7.8, this vulnerability allows unauthorized access to sensitive application data, system configuration, and user information, potentially leading to total system compromise at the local level.

Immediate Action: Apply the official security updates provided by Google in the December 2025 Android Security Bulletin as soon as they become available for your specific device model.

Proactive Monitoring: Monitor system logs for unauthorized attempts to access privileged functions or unexpected service restarts that may indicate exploitation attempts.

Compensating Controls: Ensure that all installed applications are sourced from trusted app stores and maintain strict permissions management to limit the potential impact of a local privilege escalation.

Public Exploit Available: No — no confirmed public exploit exists.

Given the severity of this elevation of privilege flaw, organizations and individual users should prioritize the installation of the December 2025 Android security patches. Rapid deployment of these updates is essential to prevent local attackers from bypassing security controls and gaining unauthorized control over device processes.