CVE-2025-66293

7.1 HIGH
Published: December 03, 2025 Modified: December 16, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/pnggroup/libpng/issues/764
Source: security-advisories@github.com
Exploit Issue Tracking Patch
https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f
Source: security-advisories@github.com
Exploit Vendor Advisory
http://www.openwall.com/lists/oss-security/2025/12/03/6
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
http://www.openwall.com/lists/oss-security/2025/12/03/7
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
http://www.openwall.com/lists/oss-security/2025/12/03/8
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
https://github.com/pnggroup/libpng/issues/764
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Issue Tracking Patch

8 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.1 / 10.0
EPSS (Exploit Probability)
0.1%
18th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

libpng