CVE-2025-14821

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:7067	Third Party Advisory
https://access.redhat.com/security/cve/CVE-2025-14821	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2423148	Issue Tracking Third Party Advisory
https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/	Release Notes

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:libssh:libssh::::::::
	cpe:2.3:a:redhat:hardened_images:-:::::::*

History

14 Oct 2026, 17:10

Type	Values Removed	Values Added
Summary		(es) Se encontró una falla en libssh. Esta vulnerabilidad permite ataques locales de man-in-the-middle, degradaciones de seguridad de las conexiones SSH (Secure Shell) y manipulación de la información de hosts confiables, lo que representa un riesgo significativo para la confidencialidad, integridad y disponibilidad de las comunicaciones SSH a través de una configuración predeterminada insegura en sistemas Windows donde la biblioteca carga automáticamente archivos de configuración del directorio C:\etc, el cual puede ser creado y modificado por usuarios locales sin privilegios.

Information

Published : 2026-04-07 17:16

Updated : 2026-10-14 17:10

NVD link : CVE-2025-14821

Mitre link : CVE-2025-14821

CVE.ORG link : CVE-2025-14821

JSON object : View

Products Affected

libssh

libssh

redhat

hardened_images

CWE

CWE-427

Uncontrolled Search Path Element

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