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 ZDI has assigned a CVSS rating of 6.6. The following CVEs are assigned: CVE-2026-18273.
AI Analysis
Technical Summary
The vulnerability in Kenwood DNR1007XR arises from incorrect permissions set on a directory used as the mount point for the USB filesystem. This misconfiguration allows a physically present attacker, who already has the ability to run low-privileged code on the device, to escalate privileges to root level. Exploitation enables arbitrary code execution with root privileges. The Zero Day Initiative assigned CVE-2026-18273 to this issue with a CVSS score of 6.6. Kenwood has released a firmware update to fix this vulnerability.
Potential Impact
Successful exploitation allows an attacker with local low-privileged code execution on the device to escalate privileges to root, potentially leading to full control over the affected Kenwood DNR1007XR device. This can compromise confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Kenwood has issued an official firmware update that corrects the incorrect permissions on the USB filesystem mount point directory. Applying this update is the recommended remediation. No additional mitigation steps are specified by the vendor advisory.
ZDI-26-490: (Pwn2Own) Kenwood DNR1007XR USB Incorrect Default Permissions Local Privilege Escalation Vulnerability
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Kenwood DNR1007XR arises from incorrect permissions set on a directory used as the mount point for the USB filesystem. This misconfiguration allows a physically present attacker, who already has the ability to run low-privileged code on the device, to escalate privileges to root level. Exploitation enables arbitrary code execution with root privileges. The Zero Day Initiative assigned CVE-2026-18273 to this issue with a CVSS score of 6.6. Kenwood has released a firmware update to fix this vulnerability.
Potential Impact
Successful exploitation allows an attacker with local low-privileged code execution on the device to escalate privileges to root, potentially leading to full control over the affected Kenwood DNR1007XR device. This can compromise confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Kenwood has issued an official firmware update that corrects the incorrect permissions on the USB filesystem mount point directory. Applying this update is the recommended remediation. No additional mitigation steps are specified by the vendor advisory.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-490/","fetched":true,"fetchedAt":"2026-07-30T15:55:47.130Z","wordCount":209}
Threat ID: 6a6b74c49c2644c7f84cc1d7
Added to database: 07/30/2026, 15:59:00 UTC
Last enriched: 07/30/2026, 16:02:18 UTC
Last updated: 07/31/2026, 13:22:19 UTC
Views: 8
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