What is CVE-2022-40621?

CVE-2022-40621 is a vulnerability in the WAVLINK Quantum D4G (WN531G3) firmware that allows an attacker to capture hashed passwords due to the lack of HTTPS communication and a weak hashing mechanism.

How does CVE-2022-40621 impact the WAVLINK Quantum D4G (WN531G3)?

CVE-2022-40621 allows an attacker with sufficient network access to capture hashed passwords on the WAVLINK Quantum D4G (WN531G3) due to insecure HTTP communication and a weak hashing mechanism.

What is the severity of CVE-2022-40621?

CVE-2022-40621 has a severity rating of 7.5 (High).

What can an attacker do with captured hashed passwords from CVE-2022-40621?

An attacker can attempt to crack the captured hashed passwords to gain unauthorized access to user accounts and sensitive information.

How can I mitigate the CVE-2022-40621 vulnerability?

To mitigate CVE-2022-40621, ensure that the WAVLINK Quantum D4G (WN531G3) firmware is updated to version M31G3.V5030.200325 or later, and enable HTTPS communication to protect password hashes.

Vulnerability/
CVE-2022-40621

high

7.5

CWE

294

13/9/2022

17/9/2024

CVE-2022-40621: WAVLINK Quantum D4G (WN531G3) Pass-The-Hash

First published: Tue Sep 13 2022(Updated: )

Because the WAVLINK Quantum D4G (WN531G3) running firmware version M31G3.V5030.200325 and earlier communicates over HTTP and not HTTPS, and because the hashing mechanism does not rely on a server-supplied key, it is possible for an attacker with sufficient network access to capture the hashed password of a logged on user and use it in a classic Pass-the-Hash style attack.

Credit: cve@rapid7.con

Affected Software	Affected Version	How to fix
Wavlink Wn531g3 Firmware	<=m31g3.v5030.200325
Wavlink WN531G3

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Reference Links

https://www.malbytes.net/2022/07/wavlink-quantum-d4g-zero-day-part-01.html

Frequently Asked Questions

What is CVE-2022-40621?
CVE-2022-40621 is a vulnerability in the WAVLINK Quantum D4G (WN531G3) firmware that allows an attacker to capture hashed passwords due to the lack of HTTPS communication and a weak hashing mechanism.
How does CVE-2022-40621 impact the WAVLINK Quantum D4G (WN531G3)?
CVE-2022-40621 allows an attacker with sufficient network access to capture hashed passwords on the WAVLINK Quantum D4G (WN531G3) due to insecure HTTP communication and a weak hashing mechanism.
What is the severity of CVE-2022-40621?
CVE-2022-40621 has a severity rating of 7.5 (High).
What can an attacker do with captured hashed passwords from CVE-2022-40621?
An attacker can attempt to crack the captured hashed passwords to gain unauthorized access to user accounts and sensitive information.
How can I mitigate the CVE-2022-40621 vulnerability?
To mitigate CVE-2022-40621, ensure that the WAVLINK Quantum D4G (WN531G3) firmware is updated to version M31G3.V5030.200325 or later, and enable HTTPS communication to protect password hashes.

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version/wavlink wn531g3 firmware/m31g3.v5030.200325
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