Is CVE-2026-18271 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-18271 being exploited in the wild.

How severe is CVE-2026-18271?

Medium severity, with a CVSS score of 6.8, published 20 August 2026.

Which products and versions are affected?

Kenwood DNR1007XR prior to firmware 2.0.0003.1000.

Is there a fix for CVE-2026-18271?

A patch was published on 2026-07-29: Firmware update released (version 2.0.0003.1000) Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-18271 attacked?

It is attacked with physical access.

Am I affected by CVE-2026-18271?

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.

CVE-2026-18271: Kenwood DNR1007XR vCardParser heap buffer overflow

CVE-2026-18271 · Severity: medium · CVSS 6.8 · Published 2026-08-20

The Kenwood DNR1007XR is a navigation and multimedia receiver used in vehicles to provide GPS, audio, and infotainment functionality. This vulnerability in the vCard parsing component allows a physically present attacker to execute arbitrary code with root privileges without authentication. An attacker with access to the device can gain complete system control, potentially compromising vehicle functions, privacy, and safety.

Technologies: Kenwood DNR1007XR. Vendors: Kenwood.

Quick answers

Is CVE-2026-18271 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-18271 being exploited in the wild.
How severe is CVE-2026-18271?: Medium severity, with a CVSS score of 6.8, published 20 August 2026.
Which products and versions are affected?: Kenwood DNR1007XR prior to firmware 2.0.0003.1000.
Is there a fix for CVE-2026-18271?: A patch was published on 2026-07-29: Firmware update released (version 2.0.0003.1000) Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-18271 attacked?: It is attacked with physical access.
Am I affected by CVE-2026-18271?: 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

A heap-based buffer overflow exists in the vCardParser class of the Kenwood DNR1007XR due to insufficient validation of user-supplied strings before copying them to a heap buffer. The vulnerability requires physical access to the device and can be triggered without authentication. Exploitation allows arbitrary code execution in the context of the root user, providing complete system compromise. Kenwood released a firmware update (version 2.0.0003.1000, dated 21.07.2026) to address this and other security vulnerabilities identified during Pwn2Own Automotive 2026 testing.

Affected products

Kenwood DNR1007XR prior to firmware 2.0.0003.1000

Timeline

2026-02-03: disclosed: Vulnerability reported to vendor
2026-07-29: patched: Firmware update released (version 2.0.0003.1000)
2026-07-29: advisory: Coordinated public release of ZDI advisory ZDI-26-488

References

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