ZDI-26-487: (Pwn2Own) Kenwood DNR1007XR udhcpd Incorrect Permission Assignment Local Privilege Escalation Vulnerability
This vulnerability allows local 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 udhcpd service. The issue results from incorrect permissions set on a resource used by the service. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of root.
Other sources
This vulnerability allows local 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 7.8. The following CVEs are assigned: CVE-2026-18270.
— 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-26-487 - Compensating control
Mitigate the Kenwood DNR1007XR udhcpd local privilege escalation by correcting the incorrect permissions on the resource used by the udhcpd service (the issue is caused by incorrect permissions assigned to a resource utilized by udhcpd).
Event History
Frequently Asked Questions
What is the severity of ZDI-26-487?
ZDI-26-487 has a CVSS rating of 7.8, indicating a high severity privilege escalation vulnerability.
How do I fix ZDI-26-487?
To mitigate ZDI-26-487, update the Kenwood DNR1007XR device to the latest firmware version as recommended by the vendor.
What systems are affected by ZDI-26-487?
ZDI-26-487 specifically impacts Kenwood DNR1007XR devices.
What kind of attacks could exploit ZDI-26-487?
Local attackers can exploit ZDI-26-487 to escalate privileges after executing low-privileged code on the affected device.
Is ZDI-26-487 a remote attack vector?
No, ZDI-26-487 requires local access to the device to execute the privilege escalation.