CVE-2022-40622

Name: CVE-2022-40622
Creator: NVD / NIST
Published: 2022-09-13T21:15:10.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2022-40622 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The WAVLINK Quantum D4G (WN531G3) running firmware version M31G3.V5030.200325 uses IP addresses to hold sessions and does not not use session tokens. Therefore, if an attacker changes their IP address to match the logged-in administrator's, or is behind the same NAT as the logged in administrator, session takeover is possible.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

The WAVLINK Quantum D4G (WN531G3) running firmware version M31G3.V5030.200325 uses IP addresses to hold sessions and does not not use session tokens. Therefore, if an attacker changes their IP address to match the logged-in administrator's, or is behind the same NAT as the logged in administrator, session takeover is possible.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.70%

48.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Wavlink	Wn531g3 Firmware	<= m31g3.v5030.200325

References

https://youtu.be/cSileV8YbsQ?t=655Exploit, Third Party Advisory
https://youtu.be/cSileV8YbsQ?t=655Exploit, Third Party Advisory

Timeline

Published: Sep 13, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-40622?

How severe is CVE-2022-40622?

CVE-2022-40622 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2022-40622?

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-2022-40622?

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

Scan your code now

Source: NVD / NIST