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CVE-2026-15370

6.7 · MEDIUM
Published Jul 21, 2026 libssh CWE-121

Overview

CVE-2026-15370 is a medium-severity vulnerability affecting libssh libssh. It was published on July 21, 2026 and has a CVSS 3.1 base score of 6.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. 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. During SFTP server directory listing, the longname field is constructed with unsafe concatenation into a fixed-size stack buffer. When a client causes the server to list attacker-controlled filenames, sufficiently long names can overflow that stack buffer and may lead to crashes or possible code execution on the server.

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

Frequently Asked Questions

What is CVE-2026-15370?

CVE-2026-15370 is a medium-severity vulnerability affecting libssh libssh. It was published on July 21, 2026 and has a CVSS 3.1 base score of 6.7 (MEDIUM).

How severe is CVE-2026-15370?

This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-15370?

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-2026-15370?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-15370 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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