CVE-2025-14821: Libssh

High severity, CVSS 7.0. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Libssh Libssh: before 0.12.0 (fixed in 0.12.0)
• Red Hat Hardened Images: affected versions not specified

Published 2026-04-07. Last modified 2026-08-31.