ZDI-CAN-29070: ZDI-26-490: (Pwn2Own) Kenwood DNR1007XR USB Incorrect Default Permissions Local Privilege Escalation Vulnerability
This vulnerability allows physically present attackers to escalate privileges on affected installations of Kenwood DNR1007XR devices. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the configuration of the mount point for the USB filesystem. The issue results from incorrect permissions on a directory used by the product. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.
Other sources
This vulnerability allows physically present attackers to escalate privileges on affected installations of Kenwood DNR1007XR devices. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 6.6. The following CVEs are assigned: CVE-2026-18273.
— 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-26-490 - Configuration
Adjust the permissions on the directory used by the product so that the USB filesystem mount point does not have incorrect default permissions that enable local privilege escalation (flaw is specifically in the configuration of the mount point for the USB filesystem).
Kenwood DNR1007XR USB mount point (USB filesystem directory permissions) directory permissions on the directory used by the product = not specified in source
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-29070?
The severity of ZDI-CAN-29070 is rated at 41 on the risk scale.
How do I fix ZDI-CAN-29070?
To fix ZDI-CAN-29070, ensure that the USB permissions on Kenwood DNR1007XR devices are correctly configured to prevent privilege escalation.
What type of attack does ZDI-CAN-29070 enable?
ZDI-CAN-29070 enables local privilege escalation attacks by allowing unauthorized access to higher privileges.
Who can exploit ZDI-CAN-29070?
ZDI-CAN-29070 can be exploited by physically present attackers who can execute low-privileged code on the Kenwood DNR1007XR devices.
What devices are affected by ZDI-CAN-29070?
The devices affected by ZDI-CAN-29070 are Kenwood DNR1007XR installations.