CVE-2026-18283: (Pwn2Own) Sony XAV-9500ES udev USB Rules Authorization Bypass Vulnerability
Sony XAV-9500ES udev USB Rules Authorization Bypass Vulnerability. This vulnerability allows physically present attackers to bypass authorization on affected installations on Sony XAV-9500ES devices. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the udev rules. A crafted USB device connected to the system can trigger instantiation of otherwise restricted USB device types. An attacker can leverage this vulnerability to bypass authorization on the system. Was ZDI-CAN-28992.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Mitigate physically present exploitation by restricting physical access and controlling/monitoring USB device connections to Sony XAV-9500ES systems (e.g., block unauthorized USB device insertion or require approved devices only).
- Compensating control
Apply the mitigation associated with ZDI-CAN-28992 for the Sony XAV-9500ES udev USB Rules Authorization Bypass vulnerability affecting udev rules.