CVE-2025-4120: jwnr2000v2 Buffer Overflow (CVSS 8.8)

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.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
netgear	jwnr2000v2_firmware	All
netgear	jwnr2000v2	All

References

Other References

https://github.com/jylsec/vuldb/blob/main/Netgear/netgear_JWNR2000v2/Buffer_overflow-sub_4238E8-log_type/README.md https://vuldb.com/?ctiid.306600 https://vuldb.com/?id.306600 https://vuldb.com/?submit.560774 https://www.netgear.com/

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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-4120? +

CVE-2025-4120 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-4120? +

CVE-2025-4120 affects products from netgear, specifically: jwnr2000v2, jwnr2000v2_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-4120? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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