CVE-2025-4139

Name: CVE-2025-4139
Creator: NVD / NIST
Published: 2025-04-30T21:15:55.003+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.89%

Last modified Jun 17, 2026

CVE-2025-4139 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. A vulnerability classified as critical was found in Netgear EX6120 1.0.0.68. Affected by this vulnerability is the function fwAcosCgiInbound. EPSS estimates a 0.89% chance of exploitation in the next 30 days.

Description

A vulnerability classified as critical was found in Netgear EX6120 1.0.0.68. Affected by this vulnerability is the function fwAcosCgiInbound. The manipulation of the argument host leads to buffer overflow. The attack can be launched remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Metrics

CVSS 3.1

8.8/10

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

CVSS 4.0

8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.89%

54.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Netgear	Ex6120 Firmware	1.0.0.68

References

https://github.com/jylsec/vuldb/blob/main/Netgear/netgear_ex6120/Buffer_overflow-fwAcosCgiInbound-port_end/README.mdBroken Link
https://vuldb.com/?ctiid.306631Permissions Required, VDB Entry
https://vuldb.com/?id.306631Third Party Advisory, VDB Entry
https://vuldb.com/?submit.560785Third Party Advisory, VDB Entry
https://www.netgear.com/Product

Timeline

Published: Apr 30, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-4139?

How severe is CVE-2025-4139?

CVE-2025-4139 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.89% probability of exploitation in the next 30 days.

How do I fix CVE-2025-4139?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-4139?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST