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Vulnerability record · CVE-2020-12127 · published 2 October 2020

CVE-2020-12127: Wavlink wn530h4 firmware missing authentication for critical function vulnerability

Wavlink · Wn530h4 Firmware

An information disclosure vulnerability in the /cgi-bin/ExportAllSettings.sh endpoint of the WAVLINK WN530H4 M30H4.V5030.190403 allows an attacker to leak router settings, including cleartext login details, DNS settings, and other sensitive information without authentication.

7.5 CVSS 3.1 High EPSS 7.4% · top 5.8% CWE-306 · Missing authentication for critical function
7.5CVSS 3.1 base score, v2 5.0
7.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

An information disclosure vulnerability in the /cgi-bin/ExportAllSettings.sh endpoint of the WAVLINK WN530H4 M30H4.V5030.190403 allows an attacker to leak router settings, including cleartext login details, DNS settings, and other sensitive information without authentication.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cerne.xyz/bugs/CVE-2020-12127 Third Party Advisory
https://www.wavlink.com/en_us/product/WL-WN530H4.html ProductVendor Advisory
https://cerne.xyz/bugs/CVE-2020-12127 Third Party Advisory
https://www.wavlink.com/en_us/product/WL-WN530H4.html ProductVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-12127), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.