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CVE-2026-4367

5.5 · MEDIUM

A flaw was found in libXpm.

Published Jun 16, 2026CWE-125EPSS 0.15%

Overview

CVE-2026-4367 is a medium-severity vulnerability. It was published on June 16, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, 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 libXpm. A local user with low privileges could exploit an Out-of-Bounds Read vulnerability in the `xpmNextWord()` function by processing a specially crafted or very small XPM (X PixMap) image file. This improper validation of file boundaries can cause an internal pointer to read beyond the file's end, leading to application crashes and Denial of Service conditions.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refaccess.redhat.com/errata/RHSA-2026:30354Refaccess.redhat.com/errata/RHSA-2026:47072Refaccess.redhat.com/security/cve/CVE-2026-4367Refbugzilla.redhat.com/show_bug.cgi?id=2448984Refgitlab.freedesktop.org/xorg/lib/libxpm/-/commit/5448e1bdRefseclists.org/oss-sec/2026/q2/192Refwww.openwall.com/lists/oss-security/2026/04/21/3

How CyberStrike helps

Frequently asked questions

What is CVE-2026-4367?

CVE-2026-4367 is a medium-severity vulnerability. It was published on June 16, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-4367?

This vulnerability has a CVSS 3.1 base score of 5.5, 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-2026-4367?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2026-4367?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-4367 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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