CVE-2025-66293

Name: CVE-2025-66293
Creator: NVD / NIST
Published: 2025-12-03T21:15:53.06+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2025-66293 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. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. EPSS estimates a 0.29% 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. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. The PNG files that trigger this vulnerability are valid per the PNG specification; the bug is in libpng's internal state management. Upgrade to libpng 1.6.52 or later.

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

0.29%

21.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Libpng	Libpng	< 1.6.52

References

https://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1Patch
https://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484aPatch
https://github.com/pnggroup/libpng/issues/764Exploit, Issue Tracking, Patch
https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4fExploit, Vendor Advisory
http://www.openwall.com/lists/oss-security/2025/12/03/6Mailing List
http://www.openwall.com/lists/oss-security/2025/12/03/7Mailing List
http://www.openwall.com/lists/oss-security/2025/12/03/8Mailing List
https://github.com/pnggroup/libpng/issues/764Exploit, Issue Tracking, Patch

Timeline

Published: Dec 3, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-66293?

How severe is CVE-2025-66293?

CVE-2025-66293 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2025-66293?

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-2025-66293?

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

Scan your code now

Source: NVD / NIST