CVE-2025-14821

high

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.

References

https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/

https://bugzilla.redhat.com/show_bug.cgi?id=2423148

https://access.redhat.com/security/cve/CVE-2025-14821

Details

Source: Mitre, NVD

Published: 2026-04-07

Updated: 2026-04-08

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

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

Severity: High

EPSS

EPSS: 0.0001