What is CVE-2025-8656?

CVE-2025-8656 is a medium-severity vulnerability in Jvckenwood Dmx958xr, classified under Protection Mechanism Failure. CVSS score: 6.8/10. Published 2025-08-06.

How severe is CVE-2025-8656?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Jvckenwood Dmx958xr

CVE-2025-8656

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.

Published 2025-08-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (13.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Jvckenwood Dmx958xr
Jvckenwood Dmx958xr Firmware — versions 1.0.0509.3100
Kenwood Dmx958xr — versions 1.0.0509.3100

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

www.zerodayinitiative.com/advisories/ZDI-25-804/ (x_research-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2025-8656?: CVE-2025-8656 is a medium-severity vulnerability in Jvckenwood Dmx958xr, classified under Protection Mechanism Failure. CVSS score: 6.8/10. Published 2025-08-06.
How severe is CVE-2025-8656?: Medium severity. CVSS v3 base score is 6.8 out of 10.