(Pwn2Own) Kenwood DNR1007XR udhcpd Incorrect Permission Assignment Local Privilege Escalation Vulnerability

July 29th, 2026
ZDI-26-487 ZDI-CAN-29111

CVE ID

CVE-2026-18270

CVSS Score

7.8 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Kenwood

Affected Products

DNR1007XR

Vulnerability Details

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.

Additional Details

Kenwood has issued an update to correct this vulnerability. More details can be found at:
https://www.kenwood.com/cs/ce/mm/firmware/2020/2020f/eng.html

Disclosure Timeline

  • 2026-02-03 - Vulnerability reported to vendor
  • 2026-07-29 - Coordinated public release of advisory
  • 2026-07-29 - Advisory Updated

Credit

Slow Horses of Qrious Secure

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