CVE-2025-14821

HIGH

Libssh: libssh: insecure default configuration leads to local man-in-the-middle attacks on windows

Title source: cna

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 (4)

Core 4

Core References

Vendor Advisory vendor-advisory x_refsource_redhat

RHSA-2026:7067

https://access.redhat.com/errata/RHSA-2026:7067

Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat

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

Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat

RHBZ#2423148

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

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

Scores

CVSS v3 7.8

EPSS 0.0013

EPSS Percentile 2.9%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-427

Status published

Products (12)

libssh/libssh

libssh/libssh < 0.12.0

Red Hat/Red Hat Enterprise Linux 10

Red Hat/Red Hat Enterprise Linux 6

Red Hat/Red Hat Enterprise Linux 7

Red Hat/Red Hat Enterprise Linux 8

Red Hat/Red Hat Enterprise Linux 9

Red Hat/Red Hat Hardened Images

Red Hat/Red Hat Hardened Images 0.12.0-1.1.hum1

Red Hat/Red Hat Hardened Images 1

... and 2 more

Published Apr 07, 2026

Tracked Since Apr 07, 2026