What’s Vulnerable › Vulnerabilities

CVE-2025-5477: Sony XAV-AX8500 Bluetooth L2CAP Protocol Heap-based Buffer Overflow Remote Code Execution Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-06-21 · updated 2026-06-17
• Weakness: CWE-122

Description

Sony XAV-AX8500 Bluetooth L2CAP Protocol Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Sony XAV-AX8500 devices. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the implementation of the Bluetooth L2CAP protocol. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the elysian-bt-service process. Was ZDI-CAN-26286.

Affected products

• Sony XAV-AX8500: from 2.00.01 before 3.02.00 — fixed in 3.02.00

How to fix

Upgrade to a fixed version: Sony XAV-AX8500 3.02.00. Check the vendor advisory for mitigations.

References

• https://www.sony.com/electronics/support/mobile-cd-players-digital-media-players-xav-series/xav-ax8500/software/00344092
• https://www.zerodayinitiative.com/advisories/ZDI-25-354/

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