ZDI-26-490: (Pwn2Own) Kenwood DNR1007XR USB Incorrect Default Permissions Local Privilege Escalation Vulnerability
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. Was ZDI-CAN-29070.
AI Analysis
Technical Summary
The Kenwood DNR1007XR device contains a vulnerability (CVE-2026-18273) involving incorrect permissions on a directory used for mounting the USB filesystem. This misconfiguration allows an attacker who already has low-privileged code execution on the device to escalate privileges to root. The vulnerability was reported to Kenwood in February 2026 and publicly disclosed in July 2026. Kenwood has released an update to fix the issue.
Potential Impact
Exploitation of this vulnerability allows an attacker with physical access and low-privileged code execution on the Kenwood DNR1007XR device to escalate privileges to root, potentially leading to full control of the device and execution of arbitrary code with highest privileges.
Mitigation Recommendations
Kenwood has issued an official update to correct the incorrect default permissions causing this vulnerability. Users of affected devices should apply the vendor-provided update available at https://www.kenwood.com/cs/ce/mm/firmware/2020/2020f/eng.html to remediate this issue.
ZDI-26-490: (Pwn2Own) Kenwood DNR1007XR USB Incorrect Default Permissions Local Privilege Escalation Vulnerability
Description
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. Was ZDI-CAN-29070.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Kenwood DNR1007XR device contains a vulnerability (CVE-2026-18273) involving incorrect permissions on a directory used for mounting the USB filesystem. This misconfiguration allows an attacker who already has low-privileged code execution on the device to escalate privileges to root. The vulnerability was reported to Kenwood in February 2026 and publicly disclosed in July 2026. Kenwood has released an update to fix the issue.
Potential Impact
Exploitation of this vulnerability allows an attacker with physical access and low-privileged code execution on the Kenwood DNR1007XR device to escalate privileges to root, potentially leading to full control of the device and execution of arbitrary code with highest privileges.
Mitigation Recommendations
Kenwood has issued an official update to correct the incorrect default permissions causing this vulnerability. Users of affected devices should apply the vendor-provided update available at https://www.kenwood.com/cs/ce/mm/firmware/2020/2020f/eng.html to remediate this issue.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-490/","fetched":true,"fetchedAt":"2026-07-30T15:55:47.130Z","wordCount":209}
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
Threat ID: 6a6b74c49c2644c7f84cc1d7
Added to database: 07/30/2026, 15:59:00 UTC
Last enriched: 08/15/2026, 05:15:18 UTC
Last updated: 09/14/2026, 10:01:29 UTC
Views: 55
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