ZDI-26-474: (Pwn2Own) Sony XAV-9500ES l2_reassemble_sdu Heap-based Buffer Overflow Remote Code Execution Vulnerability

Published Jul 29, 2026

Updated

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sony XAV-9500ES 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 handling of Bluetooth L2CAP packets. 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 device.

Other sources

— ZDI

Affected Software

2 affected components

Sony XAV-9500ES

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch ZDI-26-474
Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch CVE-2026-18281

Event History

Jul 29, 2026

Advisory Published

via ZDI·12:00 AM

Data Sourced

via ZDI·12:00 AM

DescriptionSeverityAffected Software

Advisory Published

via ZDI·05:00 AM

Frequently Asked Questions

What is the severity of ZDI-26-474?

ZDI-26-474 has been assigned a risk rating of 68.

What kind of vulnerability is ZDI-26-474?

ZDI-26-474 is a heap-based buffer overflow vulnerability that can lead to remote code execution.

How can an attacker exploit ZDI-26-474?

An attacker can exploit ZDI-26-474 by pairing a malicious Bluetooth device with the target Sony XAV-9500ES system.

Which devices are affected by ZDI-26-474?

The vulnerability ZDI-26-474 affects Sony XAV-9500ES audio/video receivers.

How do I fix ZDI-26-474?

To fix ZDI-26-474, users should apply available security updates for the affected Sony XAV-9500ES devices.