CVE-2025-14942 Authentication Bypass
Attackers can bypass authentication or leak passwords in wolfSSH client applications by manipulating the key exchange state machine.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-14942?
CVE-2025-14942 is a critical authentication bypass vulnerability in wolfSSL wolfSSH, published on 6 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
wolfSSH’s key exchange state machine can be manipulated to leak the client’s password in the clear, trick the client to send a bogus signature, or trick the client into skipping user authentication. This affects client applications with wolfSSH version 1.4.21 and earlier. Users of wolfSSH must update or apply the fix patch and it’s recommended to update credentials used. This fix is also recommended for wolfSSH server applications. While there aren’t any specific attacks on server applications, the same defect is present. Thanks to Aina Toky Rasoamanana of Valeo and Olivier Levillain of Telecom SudParis for the report.
Weakness: CWE-287
Which versions are affected by CVE-2025-14942?
It affects 1 product.
Products include Wolfssh Wolfssh.
How do I fix CVE-2025-14942?
No fix has been published for CVE-2025-14942 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-14942 being exploited?
There is no known exploitation of CVE-2025-14942 in the wild and no public exploit code.
Other vulnerabilities in wolfSSL wolfSSH
- CVE-2022-32073 Integer overflow in n/a
- CVE-2025-11625 Host verification bypass and credential leak
- CVE-2024-2873 User authentication bypass in wolfSSH server
- CVE-2026-16516 wolfSSH ECDSA host key curve not validated against negotiated algorithm
- CVE-2026-83540 wolfSSHd on Windows race condition leading to logon token reused across connections
Sources
Also known as GHSA-5r65-89wp-6mxr.