CVE-2025-14942: wolfSSH’s key exchange state machine can be manipulated to leak the client’s password in the clear, trick the client…
CVE-2025-14942 · Severity: critical · CVSS 9.8 · Published 2026-01-06
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-14942 being exploited in the wild.
How severe is CVE-2025-14942?
Critical severity, with a CVSS score of 9.8, published 6 January 2026.
Which products and versions are affected?
Wolfssh. The advisory does not name versions.
Is there a fix for CVE-2025-14942?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-14942?
Check whether you run Wolfssh. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.