Critical · published January 6, 2026
🚨 A crafty flaw in wolfSSH can expose your client's password in plain sight and even skip authentication entirely — a recipe for disaster! 🔥 This vulnerability is like a hotel check-in without verifying the guest's ID — anyone could waltz in and grab the room key, leaving everyone vulnerable. Imagine the chaos if someone could just claim they belong without any verification! An attacker could manipulate the key exchange to leak sensitive information such as passwords, enabling unauthorized access to systems. This could lead to devastating consequences, including data breaches and unauthorized actions within the affected client applications — just think of the havoc that could ensue if your sensitive data were suddenly in the wrong hands!
This vulnerability is like a hotel check-in without verifying the guest's ID — anyone could waltz in and grab the room key, leaving everyone vulnerable. Imagine the chaos if someone could just claim they belong without any verification! The vulnerability in wolfSSH’s key exchange state machine allows attackers to trick clients into sending their passwords unencrypted, as well as fabricating signatures and bypassing user authentication. This means a malicious actor could easily impersonate a legitimate user without proper credentials, leading to severe security risks.
An attacker could manipulate the key exchange to leak sensitive information such as passwords, enabling unauthorized access to systems. This could lead to devastating consequences, including data breaches and unauthorized actions within the affected client applications — just think of the havoc that could ensue if your sensitive data were suddenly in the wrong hands! Immediately update wolfSSH to version 1.4.22 or later to close this vulnerability. Additionally, patch any client applications and change the credentials employed to ensure that your systems are secure against potential exploits. Don’t forget to assess the server applications too, as they share this flaw! You’ve got this! Follow these steps, and you’ll fortify your defenses in no time. 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| wolfssh/wolfssh | < 1.4.22 | 1.4.22 |