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7.5

Sony XAV-AX8500 Bluetooth Devices Can Be Hacked Remotely

CVE-2025-5477 · published 1 year ago
Summary

Hackers can pair a malicious Bluetooth device with your Sony XAV-AX8500 to execute unauthorized code on the device. This can happen when a hacker is near your device and has the ability to connect to it. To protect yourself, ensure that you only pair devices with trusted devices, and keep your device's software up to date.

What to do
  • Update sony xav-ax8500_firmware to version 3.02.00 or later.
Affected software
VendorProductAffected versions
sony xav-ax8500_firmware >= 2.00.01, < 3.02.00
cpe:2.3:o:sony:xav-ax8500_firmware:*:*:*:*:*:*:*:*
Original advisory text
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 S...
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.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
7.5 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-122Heap-based Buffer Overflow
Timeline
Published21 Jun 2025
Updated4 Nov 2026
First seen7 Mar 2026
Sources
CVE-2025-5477 · NVD
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