CVE-2025-66293

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.

Affected products

Alt Linux, Almalinux, Centos, Debian, Linuxmint, Red Hat, Red Os, Rocky Linux

Libpng

< 1.6.52

Fix

Available

CVSS 3.1

7.1 HIGH

EPSS

0.3% (27th percentile)

Weakness

CWE-125

NVD status

Analyzed

Published

2025-12-03