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6.1 Medium

CVE-2025-64506 LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network…

Description

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_write_image_8bit function when processing 8-bit images through the simplified write API with convert_to_8bit enabled. The vulnerability affects 8-bit grayscale+alpha, RGB/RGBA, and images with incomplete row data. A conditional guard incorrectly allows 8-bit input to enter code expecting 16-bit input, causing reads up to 2 bytes beyond allocated buffer boundaries. This issue has been patched in version 1.6.51.

Affected products and versions

Product Affected versions Fixed in
libpng 1.6 1.6.0 → < 1.6.51 1.6.51

References

Timeline

  1. Published
  2. Last modified

Other CVEs of libpng

The 13 CVEs of libpng →
CVE-2026-40930 LIBPNG is a reference library for use in applications that process PNG (Portable Network Graphics) raster image files 5.4 Medium CVE-2026-34757 LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network… 5.1 Medium CVE-2026-33636 LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network… 7.6 High CVE-2026-33416 LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network… 7.5 High
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