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Vulnerability record · CVE-2021-44259 · published 17 March 2022

CVE-2021-44259: Wavlink wl-wn531g3 firmware missing authentication for critical function vulnerability

Wavlink · Wl Wn531g3 Firmware

A vulnerability is in the 'wx.html' page of the WAVLINK AC1200, version WAVLINK-A42W-1.27.6-20180418, which can allow a remote attacker to access this page without any authentication. When an unauthorized user accesses this page directly, it connects to this device as a friend of the device owner.

9.8 CVSS 3.1 Critical EPSS 2.0% · top 20.5% CWE-306 · Missing authentication for critical function
9.8CVSS 3.1 base score, v2 7.5
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability is in the 'wx.html' page of the WAVLINK AC1200, version WAVLINK-A42W-1.27.6-20180418, which can allow a remote attacker to access this page without any authentication. When an unauthorized user accesses this page directly, it connects to this device as a friend of the device owner.

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

Affected products

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

References

LinkTags
https://github.com/zer0yu/CVE_Request/blob/master/WAVLINK/WAVLINK_AC1200_unauthorized_access_vulnerability_second.md ExploitThird Party Advisory
https://github.com/zer0yu/CVE_Request/blob/master/WAVLINK/WAVLINK_AC1200_unauthorized_access_vulnerability_second.md ExploitThird Party 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-2021-44259), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.