CVE-2020-12125

Name: CVE-2020-12125
Creator: NVD / NIST
Published: 2020-10-02T09:15:13.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.56%

Last modified Jun 17, 2026

CVE-2020-12125 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A remote buffer overflow vulnerability in the /cgi-bin/makeRequest.cgi endpoint of the WAVLINK WN530H4 M30H4.V5030.190403 allows an attacker to execute arbitrary machine instructions as root without authentication.. EPSS estimates a 3.56% chance of exploitation in the next 30 days.

Description

A remote buffer overflow vulnerability in the /cgi-bin/makeRequest.cgi endpoint of the WAVLINK WN530H4 M30H4.V5030.190403 allows an attacker to execute arbitrary machine instructions as root without authentication.

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

EPSS Probability

3.56%

87.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Wavlink	Wn530h4 Firmware	m30h4.v5030.190403

References

https://cerne.xyz/bugs/CVE-2020-12125Third Party Advisory
https://www.wavlink.com/en_us/product/WL-WN530H4.htmlProduct, Vendor Advisory
https://cerne.xyz/bugs/CVE-2020-12125Third Party Advisory
https://www.wavlink.com/en_us/product/WL-WN530H4.htmlProduct, Vendor Advisory

Timeline

Published: Oct 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12125?

How severe is CVE-2020-12125?

CVE-2020-12125 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.56% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12125?

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-2020-12125?

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

Scan your code now

Source: NVD / NIST