CVE-2025-5820 Sony XAV-AX8500 Bluetooth ERTM Channel Authentication Bypass Vulnerability

Medium 6.3 Published 21 Jun 2025 Updated 23 Jun 2025

Network-adjacent attackers can bypass authentication on Sony XAV-AX8500 devices due to improper Bluetooth ERTM channel initialization.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-5820?

CVE-2025-5820 is a medium-severity authentication bypass vulnerability in Sony XAV-AX8500, published on 21 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Sony XAV-AX8500 Bluetooth ERTM Channel Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected Sony XAV-AX8500 devices. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the implementation of Bluetooth ERTM channel communication. The issue results from improper channel data initialization. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-26285.

Weakness: CWE-288

Which versions are affected by CVE-2025-5820?

It affects 1 product.

Products include Sony Xav-Ax8500 Firmware.

How do I fix CVE-2025-5820?

No fix has been published for CVE-2025-5820 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-5820 being exploited?

There is no known exploitation of CVE-2025-5820 in the wild and no public exploit code.

Sources

Also known as GHSA-m84m-25cj-px8x.