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CVE-2026-25646

8.1 · HIGH

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files.

Published Feb 10, 2026CWE-122EPSS 0.72%

Overview

CVE-2026-25646 is a high-severity vulnerability. It was published on February 10, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists in the png_set_quantize() API function. When the function is called with no histogram and the number of colors in the palette is more than twice the maximum supported by the user's display, certain palettes will cause the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer. The images that trigger this vulnerability are valid per the PNG specification. This vulnerability is fixed in 1.6.55.

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

GitHubgithub.com/pnggroup/libpng/commit/01d03b8453eb30ade759cd45c707e5a1c7277d88GitHubgithub.com/pnggroup/libpng/security/advisories/GHSA-g8hp-mq4h-rqm3Refwww.openwall.com/lists/oss-security/2026/02/09/7Refaccess.redhat.com/errata/RHSA-2026:10097Refaccess.redhat.com/errata/RHSA-2026:12274Refaccess.redhat.com/errata/RHSA-2026:14773Refaccess.redhat.com/errata/RHSA-2026:15087Refaccess.redhat.com/errata/RHSA-2026:16174Refaccess.redhat.com/errata/RHSA-2026:17596Refaccess.redhat.com/errata/RHSA-2026:3031

How CyberStrike helps

Frequently asked questions

What is CVE-2026-25646?

CVE-2026-25646 is a high-severity vulnerability. It was published on February 10, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-25646?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-25646?

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-2026-25646?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-25646 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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