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

Medium 6.8 Published 6 Aug 2025 Updated 6 Aug 2025

Physically present attackers can bypass software downgrade protections to execute arbitrary code with root privileges on Kenwood DMX958XR devices.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-8656?

CVE-2025-8656 is a medium-severity vulnerability in Kenwood DMX958XR, published on 6 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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 can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-26355.

Weakness: CWE-693

Which versions are affected by CVE-2025-8656?

It affects 1 product.

Products include Jvckenwood Dmx958xr Firmware.

How do I fix CVE-2025-8656?

No fix has been published for CVE-2025-8656 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-8656 being exploited?

There is no known exploitation of CVE-2025-8656 in the wild and no public exploit code.

Sources

Also known as GHSA-wc9h-gmqm-v3v8.