ZDI-26-473: (Pwn2Own) Sony XAV-9500ES gpsd Buffer Overflow Arbitrary Code Execution Vulnerability
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.
Other sources
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 ZDI has assigned a CVSS rating of 3.9. The following CVEs are assigned: CVE-2026-18280.
— ZDI
Affected Software
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-26-473 - Upgrade
Upgrade
gpsd daemon (handling of NMEA data)to a version that resolves this vulnerability.Fixed in CVE-2026-18280
Event History
Frequently Asked Questions
What is the severity of ZDI-26-473?
The severity of ZDI-26-473 is rated at a CVSS score of 3.9.
How do I fix ZDI-26-473?
To fix ZDI-26-473, you should apply any available firmware updates from Sony for the XAV-9500ES device.
Who can exploit ZDI-26-473?
ZDI-26-473 can be exploited by physically present attackers without the need for authentication.
What type of vulnerability is ZDI-26-473?
ZDI-26-473 is a buffer overflow vulnerability that allows arbitrary code execution.
What impact does ZDI-26-473 have on Sony XAV-9500ES devices?
The impact of ZDI-26-473 is that an attacker can execute arbitrary code, potentially compromising the device's functionality.