Vulnerability in Sony Xav-Ax8500
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (27.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Sony Xav-Ax8500 — versions 2.00.01
- Sony Xav-Ax8500 Firmware
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-25-358/ (x_research-advisory, Third Party Advisory)
- www.sony.com/electronics/support/mobile-cd-players-digital-media-players-xav-se… (vendor-advisory, Patch)
Frequently asked questions
- What is CVE-2025-5820?
- CVE-2025-5820 is a high-severity vulnerability in Sony Xav-Ax8500, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 8.8/10. Published 2025-06-21.
- How severe is CVE-2025-5820?
- High severity. CVSS v3 base score is 8.8 out of 10.