How severe is CVE-2025-4120?

CVE-2025-4120 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-4120 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-4120?

CVE-2025-4120 affects Netgear Jwnr2000v2 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-4120?

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-2025-4120 have an EU (EUVD) identifier?

Yes. CVE-2025-4120 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12716.

When was CVE-2025-4120 published?

CVE-2025-4120 was published on 2025-04-30 and last updated on 2026-06-17.

CVE-2025-4120

CVE-2025-4120 is a high-severity vulnerability in Netgear Jwnr2000v2 Firmware with a CVSS 3.x base score of 8.8. 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 8.7
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12716
Weakness: CWE-120
Affected product: Netgear Jwnr2000v2 Firmware
Published: 2025-04-30
Last modified: 2026-06-17

Description

A vulnerability was found in Netgear JWNR2000v2 1.0.0.11. It has been classified as critical. Affected is the function sub_4238E8. The manipulation of the argument host leads to buffer overflow. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2025-4120?: A vulnerability was found in Netgear JWNR2000v2 1.0.0.11. It has been classified as critical. Affected is the function sub_4238E8. The manipulation of the argument host leads to buffer overflow. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2025-4120?: CVE-2025-4120 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-4120 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-4120?: CVE-2025-4120 affects Netgear Jwnr2000v2 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-4120?: 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-2025-4120 have an EU (EUVD) identifier?: Yes. CVE-2025-4120 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12716.
When was CVE-2025-4120 published?: CVE-2025-4120 was published on 2025-04-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:netgear:jwnr2000v2_firmware:1.0.0.11:*:*:*:*:*:*:*

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