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CVE-2026-25646

🔴 HIGH

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists...

Published
Feb 10, 2026
Last Modified
Feb 13, 2026
Views
22
Bookmarks
0

Description

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LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists in the png_set_quantize() API function. When the function is called with no histogram and the number of colors in the palette is more than twice the maximum supported by the user's display, certain palettes will cause the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer. The images that trigger this vulnerability are valid per the PNG specification. This vulnerability is fixed in 1.6.55.

Affected Products (1)

libpng - libpng

Version: *

CVSS Scores

CVSS 3.1 8.1
8.1
HIGH
CVSS 2.0 8.1

References

github.com github.com www.openwall.com github.com

Additional Information

Source
security-advisories@github.com
State
Analyzed

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