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.
References (7)
Core 7
Core References
Exploit, Vendor Advisory x_refsource_confirm
https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f
Exploit, Issue Tracking, Patch x_refsource_misc
https://github.com/pnggroup/libpng/issues/764
Patch x_refsource_misc
https://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1
Patch x_refsource_misc
https://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484a
Scores
CVSS v3
7.1
EPSS
0.0009
EPSS Percentile
25.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-125
Status
published
Products (1)
libpng/libpng
< 1.6.52
Published
Dec 03, 2025
Tracked Since
Feb 18, 2026