CVE-2025-5820 json
Sony XAV-AX8500 Bluetooth ERTM Channel Authentication Bypass Vulnerability
published 2025-06-21 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-18880
- cvss
- 6.3
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- sony xav-ax8500_firmware 3.02.00
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 16 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.3 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Sony XAV-AX8500
Classification
- Weakness
-
- CWE-288 Authentication Bypass Using an Alternate Path or Channel
References
-
sony.com
/electronics/support/mobile-cd-players-digital-media-players-xav-series/xav-ax8500/software/00344092
vendor-advisory, patch
-
zerodayinitiative.com
/advisories/ZDI-25-358/
third-party-advisory
Sources
- CVE List CVE-2025-5820
- NVD CVE-2025-5820
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.