PT-2026-30900 · Libssh+1 · Libssh+1

Published 2026-04-07 · Updated 2026-04-24 · CVE-2025-14821

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions libssh (affected versions not specified)

Description A flaw exists in libssh that allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information. This poses a risk to the confidentiality, integrity, and availability of SSH communications. The issue stems from 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Uncontrolled Search Path Element

Weakness Enumeration

CWE-427

Related Identifiers

BDU:2026-07271

CVE-2025-14821

RHSA-2026:7067

Affected Products

Red Os

Libssh

References · 11

• https://access.redhat.com/errata/RHSA-2026:7067 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-14821 · Security Note
• https://bdu.fstec.ru/vul/2026-07271 · Security Note
• https://access.redhat.com/security/cve/cve-2025-14821 · Note
• https://libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases · Note
• https://twitter.com/CVEnew/status/2041569987014561955 · Twitter Post
• https://access.redhat.com/security/cve/CVE-2025-14821 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti-red-os-8-0/uyazvimost-libssh-cve-2025-14821-8.0 · Note
• https://redos.red-soft.ru/search/?iblock_id=24&q=CVE-2025-14821 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2423148 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-libssh-cve-2025-14821-7.3 · Note