CVE-2025-14821
7.8 · HIGHOverview
CVE-2025-14821 is a high-severity vulnerability affecting libssh libssh. It was published on April 7, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from libssh. Update libssh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| libssh | libssh | >= 0, < 0.12.0 | Affected |
Frequently Asked Questions
What is CVE-2025-14821?
CVE-2025-14821 is a high-severity vulnerability affecting libssh libssh. It was published on April 7, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2025-14821?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-14821?
Check the references section for vendor advisories and patches from libssh. Update libssh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-14821?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-14821 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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