CVE-2026-18273

Root code execution via USB mount permissions

Published Aug 20, 2026 · Updated Aug 20, 2026

Incorrect default permissions in the USB mount point in JVCKENWOOD DNR1007XR 1.7.0003.1000 allow physically present attackers to execute code as root. The flaw is in the USB filesystem mount-point configuration, where a product directory is exposed with overly permissive access instead of root-only permissions. Exploitation requires prior low-privileged code execution and physical access to the device, after which the writable mount path can be used to gain full root execution on the head unit.

CVSS severity6.6
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect default permissions in the USB mount point in JVCKENWOOD DNR1007XR 1.7.0003.1000 allow physically present attackers to execute code as root. The flaw is in the USB filesystem mount-point configuration, where a product directory is exposed with overly permissive access instead of root-only permissions. Exploitation requires prior low-privileged code execution and physical access to the device, after which the writable mount path can be used to gain full root execution on the head unit.

The record

CVE
CVE-2026-18273
Published
Aug 20, 2026
Updated
Aug 20, 2026
Vendor
JVCKENWOOD
Product
DNR1007XR
Classifications
CWE-276, T1068
Attack vector
physical
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=1.7.0003.1000

What conditions does exploitation require?

Attack vectorphysical
Required privilegesUnavailable in this record.

What is affected?

JVCKENWOOD · DNR1007XRversion=1.7.0003.1000

Published CVSS scores

6.6ZDICVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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