CVE-2025-64720

Name: CVE-2025-64720
Creator: NVD / NIST
Published: 2025-11-25T00:15:47.46+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2025-64720 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.

Metrics

CVSS 3.1

7.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

EPSS Probability

0.28%

19.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Libpng	Libpng	>= 1.6.0, < 1.6.51

References

https://github.com/pnggroup/libpng/commit/08da33b4c88cfcd36e5a706558a8d7e0e4773643Patch
https://github.com/pnggroup/libpng/issues/686Exploit, Issue Tracking
https://github.com/pnggroup/libpng/pull/751Issue Tracking, Patch
https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcwwExploit, Vendor Advisory
https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcwwExploit, Vendor Advisory

Timeline

Published: Nov 25, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-64720?

How severe is CVE-2025-64720?

CVE-2025-64720 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2025-64720?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-64720?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST