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.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1 Patch
- https://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484a Patch
- https://github.com/pnggroup/libpng/issues/764 Exploit, Issue Tracking, Patch
- https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f Exploit, Vendor Advisory
- https://github.com/pnggroup/libpng/issues/764 Exploit, Issue Tracking, Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.1 · libpngNVD modified 2026-10-18 17:10
Affected (CPE criteria) 1
cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:*
References 8
- https://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1 Patch
- https://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484a Patch
- https://github.com/pnggroup/libpng/issues/764 Exploit, Issue Tracking, Patch
- https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f Exploit, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/12/03/6 Mailing List
- http://www.openwall.com/lists/oss-security/2025/12/03/7 Mailing List
- http://www.openwall.com/lists/oss-security/2025/12/03/8 Mailing List
- https://github.com/pnggroup/libpng/issues/764 Exploit, Issue Tracking, Patch