CVE-2021-44259

Name: CVE-2021-44259
Creator: NVD / NIST
Published: 2022-03-17T13:15:07.467+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.93%

Last modified Jun 17, 2026

CVE-2021-44259 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.93% chance of exploitation in the next 30 days.

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.

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

1.93%

77.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Wavlink	Wl-Wn531g3 Firmware	a42w-1.27.6-20180418

References

https://github.com/zer0yu/CVE_Request/blob/master/WAVLINK/WAVLINK_AC1200_unauthorized_access_vulnerability_second.mdExploit, Third Party Advisory
https://github.com/zer0yu/CVE_Request/blob/master/WAVLINK/WAVLINK_AC1200_unauthorized_access_vulnerability_second.mdExploit, Third Party Advisory

Timeline

Published: Mar 17, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44259?

How severe is CVE-2021-44259?

CVE-2021-44259 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.93% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44259?

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-2021-44259?

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

Scan your code now

Source: NVD / NIST