CVE-2025-5820: xav-ax8500 — Fix

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.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-288 CWE-288

Affected Products

Vendor	Product	Versions
sony	xav-ax8500_firmware	2.00.1 — 3.02.00
sony	xav-ax8500	All

References

Advisories & Patches

https://www.sony.com/electronics/support/mobile-cd-players-digital-media-players-xav-series/xav-ax8500/software/00344092

Other References

https://www.zerodayinitiative.com/advisories/ZDI-25-358/

Frequently Asked Questions

What is CVE-2025-5820? +

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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-5820? +

CVE-2025-5820 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-5820? +

CVE-2025-5820 affects products from sony, specifically: xav-ax8500, xav-ax8500_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-5820? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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