Out-of-bounds Read Affecting libpng package, versions <1.6.51-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.19% (10th percentile)

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  • Snyk IDSNYK-WOLFILATEST-LIBPNG-17763524
  • published1 Jul 2026
  • disclosed25 Nov 2025

Introduced: 25 Nov 2025

CVE-2025-64505  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Wolfi libpng to version 1.6.51-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng package and not the libpng package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to version 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_do_quantize function when processing PNG files with malformed palette indices. The vulnerability occurs when palette_lookup array bounds are not validated against externally-supplied image data, allowing an attacker to craft a PNG file with out-of-range palette indices that trigger out-of-bounds memory access. This issue has been patched in version 1.6.51.

CVSS Base Scores

version 3.1