# CVE-2026-18272: Kenwood DNR1007XR command injection in startUpdateProcess

Source: https://junglewise.ai/threats/cve-2026-18272-kenwood-dnr1007xr-command-injection-in-startupdateprocess  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-20. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-18272 · Severity: medium · CVSS 6.8 · Published 2026-08-20

The Kenwood DNR1007XR is a navigation and multimedia receiver used in vehicles. This vulnerability allows an attacker with physical access to the device to execute arbitrary code with root privileges by injecting commands into the firmware update process. Since no authentication is required, any person with physical access to the vehicle can exploit this to gain complete control of the infotainment system.

Technologies: [Kenwood DNR1007XR](https://junglewise.ai/threats/technologies/dnr1007xr). Vendors: [Kenwood](https://junglewise.ai/threats/vendors/kenwood).

## Quick answers

**Is CVE-2026-18272 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18272 being exploited in the wild.

**How severe is CVE-2026-18272?** Medium severity, with a CVSS score of 6.8, published 20 August 2026.

**Which products and versions are affected?** Kenwood DNR1007XR <2020 firmware update (2026-07-29).

**Is there a fix for CVE-2026-18272?** A patch was published on 2026-07-29: Firmware update released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-18272 attacked?** It is attacked with physical access.

**Am I affected by CVE-2026-18272?** Check whether you run Kenwood DNR1007XR at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a command injection vulnerability in the startUpdateProcess method of the Kenwood DNR1007XR firmware. The root cause is insufficient validation of user-supplied input before passing it to a system call, allowing an attacker to inject arbitrary shell commands. The attack vector requires physical access to the device (AV:P), but no authentication or user interaction is necessary. An attacker can leverage this flaw to execute arbitrary commands in the context of root, achieving complete code execution. A firmware update was released in July 2026 to address this vulnerability.

## Affected products

- Kenwood DNR1007XR <2020 firmware update (2026-07-29)

## Timeline

- 2026-02-03: disclosed: Vulnerability reported to Kenwood
- 2026-07-29: patched: Firmware update released
- 2026-07-29: advisory: ZDI-26-489 advisory published

## References

- [https://www.kenwood.com/cs/ce/mm/firmware/2020/2020f/eng.html](https://www.kenwood.com/cs/ce/mm/firmware/2020/2020f/eng.html)
- [https://www.zerodayinitiative.com/advisories/ZDI-26-489/](https://www.zerodayinitiative.com/advisories/ZDI-26-489/)

## Related threats

- [Kenwood DNR1007XR USB incorrect default permissions privilege escalation](https://junglewise.ai/threats/cve-2026-18273-kenwood-dnr1007xr-usb-incorrect-default-permissions-privilege)
- [Kenwood DNR1007XR vCardParser heap buffer overflow](https://junglewise.ai/threats/cve-2026-18271-kenwood-dnr1007xr-vcardparser-heap-buffer-overflow)
- [Kenwood DNR1007XR udhcpd privilege escalation via incorrect permissions](https://junglewise.ai/threats/cve-2026-18270-kenwood-dnr1007xr-udhcpd-privilege-escalation-via-incorrect)
- [Kenwood DNR1007XR out-of-bounds write in tchdr_bytestream_read](https://junglewise.ai/threats/cve-2026-18269-kenwood-dnr1007xr-out-of-bounds-write-in-tchdr-bytestream-read)
- [Kenwood DNR1007XR JKGenService command injection local privilege escalation](https://junglewise.ai/threats/cve-2026-18268-kenwood-dnr1007xr-jkgenservice-command-injection-local-privilege)