(Pwn2Own) Sony XAV-9500ES gpsd Buffer Overflow Arbitrary Code Execution Vulnerability

July 29th, 2026
ZDI-26-473 ZDI-CAN-29060

CVE ID

CVE-2026-18280

CVSS Score

3.9 AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected Vendors

Sony

Affected Products

XAV-9500ES

Vulnerability Details

This vulnerability allows physically present attackers to execute arbitrary code on affected installations of Sony XAV-9500ES devices. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of NMEA data by the gpsd daemon. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the gpsd daemon.

Additional Details

Sony has issued an update to correct this vulnerability. More details can be found at:
https://www.sony.com/electronics/support/mobile-cd-players-digital-media-players-xav-series/xav-9500es/software/00274922

Disclosure Timeline

  • 2026-03-19 - Vulnerability reported to vendor
  • 2026-07-29 - Coordinated public release of advisory
  • 2026-07-29 - Advisory Updated

Credit

Synacktiv

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