How severe is CVE-2025-8656?

CVE-2025-8656 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-8656 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-8656?

CVE-2025-8656 affects Jvckenwood Dmx958xr Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-8656?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-8656 have an EU (EUVD) identifier?

Yes. CVE-2025-8656 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23677.

When was CVE-2025-8656 published?

CVE-2025-8656 was published on 2025-08-06 and last updated on 2026-06-17.

CVE-2025-8656

CVE-2025-8656 is a medium-severity vulnerability in Jvckenwood Dmx958xr Firmware with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-693.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-23677
Weakness: CWE-693
Affected product: Jvckenwood Dmx958xr Firmware
Published: 2025-08-06
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-8656?: CVE-2025-8656 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-8656 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-8656?: CVE-2025-8656 affects Jvckenwood Dmx958xr Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-8656?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-8656 have an EU (EUVD) identifier?: Yes. CVE-2025-8656 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23677.
When was CVE-2025-8656 published?: CVE-2025-8656 was published on 2025-08-06 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-25-804/

Affected products (1)

cpe:2.3:o:jvckenwood:dmx958xr_firmware:1.0.0509.3100:*:*:*:*:*:*:*

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