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Vulnerability record · CVE-2025-14821 · published 7 April 2026

CVE-2025-14821: Libssh uncontrolled search path element vulnerability

Libssh · Libssh

A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users.

7.0 CVSS 3.1 High EPSS 0.13% · top 97.8% CWE-427 · Uncontrolled search path element
7.0CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
31 Aug 2026Last modified by NVD

Description

A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
https://access.redhat.com/errata/RHSA-2026:7067 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2025-14821 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2423148 Issue TrackingThird Party Advisory
https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/ Release Notes

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Source: NIST National Vulnerability Database (record CVE-2025-14821), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.