CVE-2025-4140

Name: CVE-2025-4140
Creator: NVD / NIST
Published: 2025-04-30T22:15:17.097+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2025-4140 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. A vulnerability, which was classified as critical, has been found in Netgear EX6120 1.0.3.94. Affected by this issue is the function sub_30394. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

A vulnerability, which was classified as critical, has been found in Netgear EX6120 1.0.3.94. Affected by this issue is the function sub_30394. The manipulation of the argument host leads to buffer overflow. The attack may be launched remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/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

0.92%

55.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Netgear	Ex6120 Firmware	1.0.3.94

References

https://github.com/jylsec/vuldb/blob/main/Netgear/netgear_ex6200/Buffer_overflow-sub_30394-wifi_2g_onoff_sche/README.mdExploit
https://vuldb.com/?ctiid.306632Permissions Required, VDB Entry
https://vuldb.com/?id.306632Third Party Advisory, VDB Entry
https://vuldb.com/?submit.560788Third 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-2025-4140?

How severe is CVE-2025-4140?

CVE-2025-4140 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2025-4140?

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-2025-4140?

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

Scan your code now

Source: NVD / NIST