Is CVE-2025-5820 actively exploited?

No active exploitation of CVE-2025-5820 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-5820 be exploited remotely?

Partially. CVE-2025-5820 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2025-5820?

CVE-2025-5820 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2025-5820

CWE-288Published: June 21, 2025· Updated: Jun 17, 2026

8.8

CVSS v3.1

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.

NVD Source

Technical Analysis

CVE-2025-5820 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.