CVE-2025-64720 | THREATINT

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, 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.

PUBLISHED Reserved 2025-11-10 | Published 2025-11-24 | Updated 2025-11-25 | Assigner GitHub_M

HIGH: 7.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Problem types

CWE-125: Out-of-bounds Read

Product status

>= 1.6.0, < 1.6.51

affected

References

github.com/...libpng/security/advisories/GHSA-hfc7-ph9c-wcww exploit

github.com/...libpng/security/advisories/GHSA-hfc7-ph9c-wcww

github.com/pnggroup/libpng/issues/686

github.com/pnggroup/libpng/pull/751

github.com/...ommit/08da33b4c88cfcd36e5a706558a8d7e0e4773643

cve.org (CVE-2025-64720)

nvd.nist.gov (CVE-2025-64720)

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