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CVE-2025-14942

Wolfssh authentication bypass

9.8 CRITICALEPSS 0.39%
  1. Published6 Jan 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Wolfssh< 1.4.22

Remediation

Fixed in
Wolfssh≥ 1.4.22

References

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Frequently asked

Is CVE-2025-14942 being actively exploited?

CVE-2025-14942 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.39%.

How severe is CVE-2025-14942?

CVE-2025-14942 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.39% probability of exploitation.

Which products are affected by CVE-2025-14942?

Affected products include Wolfssh.

How do I fix CVE-2025-14942?

Upgrade affected software to a fixed version, for example Wolfssh 1.4.22 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-14942 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.