CVE-2025-64720

CVE Details

Release Date:	2025-11-25
Impact:	Important	What is this?

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 x 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.

See more information about CVE-2025-64720 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.1
Vector String:	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Version:	3.1
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	Required
Scope:	Unchanged
Confidentiality Impact:	Low
Integrity Impact:	None
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 10 (libpng)	ELSA-2026-0237	2026-01-07
Oracle Linux version 8 (libpng)	ELSA-2026-0241	2026-01-07
Oracle Linux version 8 (mingw-libpng)	ELSA-2026-0125	2026-01-07
Oracle Linux version 9 (libpng)	ELSA-2026-0238	2026-01-07