A critical heap buffer overflow vulnerability in the Android Bluetooth stack allows for local privilege escalation on affected devices.

This is a heap buffer overflow flaw located in the avrc_vendor_msg function within avrc_opt.cc. The vulnerability permits an attacker with local access to a paired device to escalate privileges without requiring additional execution rights or user interaction.

Successful exploitation of this vulnerability grants an attacker elevated privileges on the target device, potentially leading to unauthorized data access, system compromise, or full control over the mobile environment. With a CVSS score of 7.8, this represents a high-severity risk that could undermine the integrity and confidentiality of corporate mobile assets and any sensitive data stored therein.

Immediate Action: Deploy the September 2025 Android Security Bulletin updates provided by Google or your device manufacturer to all affected handsets.

Proactive Monitoring: Security teams should monitor device logs for unexpected Bluetooth-related crashes or abnormal service behavior that may indicate exploitation attempts.

Compensating Controls: Ensure that Bluetooth functionality is disabled when not in active use and restrict the pairing of unknown or untrusted devices to reduce the attack surface.

Public Exploit Available: Unknown

This vulnerability presents a significant risk to mobile security, particularly in environments where Bluetooth pairing with external devices is common. Organizations should prioritize the deployment of the September 2025 security patch across all managed Android 13 and 14 devices to mitigate the risk of local privilege escalation.