CVE-2025-8656: Kenwood DMX958XR Protection Mechanism Failure Software Downgrade Vulnerability

Routine

MEDIUM 6.8MITIGATE

CVE-2025-8656 is a medium-severity flaw (CVSS 6.8) affecting dmx958xr firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Kenwood DMX958XR Protection Mechanism Failure Software Downgrade Vulnerability. This vulnerability allows physically present attackers to downgrade software on affected installations of Kenwood DMX958XR devices. Authentication is not required to exploit this vulnerability. The specific flaw exists within the libSystemLib library. The issue results from the lack of proper validation of version information before performing an update. An attacker

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-693
Published	2025-08-06
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: jvckenwood

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-06 02:15 UTCPublished CVE record published
2026-06-17 10:07 UTCUpdated Record last modified

jvckenwood dmx958xr firmware MITIGATE

Affected: 1.0.0509.3100

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0509.3100

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-8656?

dmx958xr firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-8656 being exploited?

CVE-2025-8656 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-8656 affect?

CVE-2025-8656 affects dmx958xr firmware. Severity is medium (CVSS 6.8). Kenwood DMX958XR Protection Mechanism Failure Software Downgrade Vulnerability. This vulnerability allows physically present attackers to downgrade software on affected installations of Kenwood DMX958XR devices. Authentication is not requir

How urgent is CVE-2025-8656?

Priority 28/100. No elevated risk signals yet.

Related CVEs

CVE-2025-8655 MEDIUM 6.8 MITIGATE Kenwood DMX958XR libSystemLib Command injection Remote Code Execution Vulnerability
CVE-2025-8654 HIGH 8.8 MITIGATE Kenwood DMX958XR ReadMVGImage Command Injection Remote Code Execution Vulnerability
CVE-2025-8653 HIGH 8.8 MITIGATE Kenwood DMX958XR JKRadioService Stack-based Buffer Overflow Remote Code Execution Vulnerability
CVE-2025-8652 MEDIUM 6.8 MITIGATE Kenwood DMX958XR JKWifiService Command Injection Remote Code Execution Vulnerability
CVE-2025-8651 MEDIUM 6.8 MITIGATE Kenwood DMX958XR JKWifiService Command Injection Remote Code Execution Vulnerability

References

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