Is CVE-2025-14821 actively exploited?

No active exploitation of CVE-2025-14821 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-14821 be exploited remotely?

No. CVE-2025-14821 requires local access to exploit.

What is the CVSS score of CVE-2025-14821?

CVE-2025-14821 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2025-14821

HIGH

CVE-2025-14821

CWE-427Published: April 7, 2026· Updated: Apr 8, 2026

7.8

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.1th

Official 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.

NVD Source

Technical Analysis

CVE-2025-14821 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.