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Vulnerability record · CVE-2020-12266 · published 27 April 2020

CVE-2020-12266: Wavlink wl-wn579g3 firmware missing authentication for critical function vulnerability

Wavlink · Wl Wn579g3 Firmware

An issue was discovered where there are multiple externally accessible pages that do not require any sort of authentication, and store system information for internal usage. The devices automatically query these pages to update dashboards and other statistics, but the pages can be accessed externally without any authentication. All the pages follow the naming convention live_(string).shtml. Among the information disclosed is: interface status logs, IP address of the device, MAC address of the device, model and current firmware version, location, all running processes, all interfaces and their statuses, all current DHCP leases and the associated hostnames, all other wireless networks in range of the router, memory statistics, and components of the configuration of the device such as enabled features. Affected devices: Affected devices are: Wavlink WN530HG4, Wavlink WN575A3, Wavlink WN579G3,Wavlink WN531G3, Wavlink WN533A8, Wavlink WN531A6, Wavlink WN551K1, Wavlink WN535G3, Wavlink WN530H4, Wavlink WN57X93, WN572HG3, Wavlink WN578A2, Wavlink WN579G3, Wavlink WN579X3, and Jetstream AC3000/ERAC3000

7.5 CVSS 3.1 High EPSS 1.8% · top 22.8% CWE-306 · Missing authentication for critical function
7.5CVSS 3.1 base score, v2 5.0
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
15Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

An issue was discovered where there are multiple externally accessible pages that do not require any sort of authentication, and store system information for internal usage. The devices automatically query these pages to update dashboards and other statistics, but the pages can be accessed externally without any authentication. All the pages follow the naming convention live_(string).shtml. Among the information disclosed is: interface status logs, IP address of the device, MAC address of the device, model and current firmware version, location, all running processes, all interfaces and their statuses, all current DHCP leases and the associated hostnames, all other wireless networks in range of the router, memory statistics, and components of the configuration of the device such as enabled features. Affected devices: Affected devices are: Wavlink WN530HG4, Wavlink WN575A3, Wavlink WN579G3,Wavlink WN531G3, Wavlink WN533A8, Wavlink WN531A6, Wavlink WN551K1, Wavlink WN535G3, Wavlink WN530H4, Wavlink WN57X93, WN572HG3, Wavlink WN578A2, Wavlink WN579G3, Wavlink WN579X3, and Jetstream AC3000/ERAC3000

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

Affected products

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

References

LinkTags
https://github.com/Roni-Carta/nyra Not ApplicableThird Party Advisory
https://github.com/sudo-jtcsec/CVE/blob/master/CVE-2020-12266 Third Party Advisory
https://github.com/sudo-jtcsec/CVE/blob/master/CVE-2020-12266-affected_devices Third Party Advisory
https://github.com/sudo-jtcsec/Nyra Broken Link
https://www.wavlink.com Vendor Advisory
https://github.com/Roni-Carta/nyra Not ApplicableThird Party Advisory
https://github.com/sudo-jtcsec/CVE/blob/master/CVE-2020-12266 Third Party Advisory
https://github.com/sudo-jtcsec/CVE/blob/master/CVE-2020-12266-affected_devices Third Party Advisory
https://github.com/sudo-jtcsec/Nyra Broken Link
https://www.wavlink.com Vendor Advisory

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

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Source: NIST National Vulnerability Database (record CVE-2020-12266), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.