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Vulnerabilities CVE-2025-14821

CVE-2025-14821

High
Open
TLP:CLEAR

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

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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.

Details

CVSS Score
7.8
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Apr 7, 2026
Last Modified
Aug 21, 2026
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