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CVE-2025-64720

🔴 HIGH

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, an out-of-bounds read v...

Published
Nov 25, 2025
Last Modified
Nov 26, 2025
Views
3
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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. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.

Affected Products (1)

libpng - libpng

Version: *

CVSS Scores

CVSS 3.1 7.1
7.1
HIGH
CVSS 2.0 7.1

References

github.com github.com github.com github.com github.com

Additional Information

Source
security-advisories@github.com
State
Analyzed

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