How severe is CVE-2025-30142?

CVE-2025-30142 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-30142 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-30142?

CVE-2025-30142 affects Gnetsystem G-onx Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-30142?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-30142 have an EU (EUVD) identifier?

Yes. CVE-2025-30142 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6709.

When was CVE-2025-30142 published?

CVE-2025-30142 was published on 2025-03-18 and last updated on 2026-06-17.

CVE-2025-30142

CVE-2025-30142 is a high-severity vulnerability in Gnetsystem G-onx Firmware with a CVSS 3.x base score of 8.1. 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-290.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-6709
Weakness: CWE-290
Affected product: Gnetsystem G-onx Firmware
Published: 2025-03-18
Last modified: 2026-06-17

Description

An issue was discovered on G-Net Dashcam BB GONX devices. Bypassing of Device Pairing can occur. It uses MAC address verification as the sole mechanism for recognizing paired devices, allowing attackers to bypass authentication. By capturing the MAC address of an already-paired device through ARP scanning or other means, an attacker can spoof the MAC address and connect to the dashcam without going through the pairing process. This enables full access to the device.

Frequently asked questions

What is CVE-2025-30142?: An issue was discovered on G-Net Dashcam BB GONX devices. Bypassing of Device Pairing can occur. It uses MAC address verification as the sole mechanism for recognizing paired devices, allowing attackers to bypass authentication. By capturing the MAC address of an already-paired device through ARP scanning or other means, an attacker can spoof the MAC address and connect to the dashcam without going through the pairing process. This enables full access to the device.
How severe is CVE-2025-30142?: CVE-2025-30142 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-30142 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-30142?: CVE-2025-30142 affects Gnetsystem G-onx Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-30142?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-30142 have an EU (EUVD) identifier?: Yes. CVE-2025-30142 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-6709.
When was CVE-2025-30142 published?: CVE-2025-30142 was published on 2025-03-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:gnetsystem:g-onx_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Gnetsystem G-onx Firmware

CVE-2025-30139 — Critical (CVSS 9.8): An issue was discovered on G-Net Dashcam BB GONX devices. Default credentials for SSID cannot be changed. It broadcasts…
CVE-2025-30140 — High (CVSS 7.5): An issue was discovered on G-Net Dashcam BB GONX devices. A Public Domain name is Used for the Internal Domain Name. It…
CVE-2025-30141 — High (CVSS 7.5): An issue was discovered on G-Net Dashcam BB GONX devices. One can Remotely Dump Video Footage and the Live Video…
CVE-2025-30138 — Medium (CVSS 4.6): An issue was discovered on G-Net Dashcam BB GONX devices. Managing Settings and Obtaining Sensitive Data and Sabotaging…

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