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Vulnerability record · CVE-2025-14942 · published 6 January 2026

CVE-2025-14942: Wolfssh improper authentication vulnerability

WWolfssh · Wolfssh

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.

9.4 CVSS 4.0 Critical EPSS 0.40% · top 68.7% CWE-287 · Improper authentication
9.4CVSS 4.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/wolfSSL/wolfssh/pull/855 Issue Tracking

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-32073Wolfssh integer overflow vulnerabilityWolfSSH v1.4.7 was discovered to contain an integer overflow via the function wolfSSH_SFTP_RecvRMDIR.EPSS 1.9%9.4CVE-2025-11625Wolfssh improper authentication vulnerabilityImproper host authentication vulnerability in wolfSSH version 1.4.20 and earlier clients that allows authentication bypass and leaking of clients cre…EPSS 0.43%9.1CVE-2024-2873Wolfssh improper authentication vulnerabilityA vulnerability was found in wolfSSH's server-side state machine before versions 1.4.17. A malicious client could create channels without first perfo…EPSS 0.62%5.1CVE-2025-15382Wolfssh out-of-bounds read vulnerabilityA heap buffer over-read vulnerability exists in the wolfSSH_CleanPath() function in wolfSSH. An authenticated remote attacker can trigger the issue v…EPSS 0.34%2.3CVE-2026-0930Wolfssh out-of-bounds read vulnerabilityPotential read out of bounds case with wolfSSHd on Windows while handling a terminal resize request. An authenticated user could trigger the out of b…EPSS 0.17%1.8CVE-2025-11624Wolfssh out-of-bounds write vulnerabilityPotential stack buffer overwrite on the SFTP server side when receiving a malicious packet that has a handle size larger than the system handle or fi…EPSS 0.37%7.5CVE-2026-42018JFrog Artifactory improper authentication leaks anonymous tokenJFrog Artifactory can return an internal anonymous-user token to an unauthenticated caller even when anonymous access is disabled. Because the token …KEVEPSS 9.8%analysed9.8CVE-2026-82329JFrog Artifactory improper authentication allows admin takeoverJFrog Artifactory contains an improper authentication weakness (CWE-287) that, under default configuration, may let an unauthenticated attacker with …KEVEPSS 14%analysed

Source: NIST National Vulnerability Database (record CVE-2025-14942), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.