VDB
ALPINE-CVE-2025-64720
ALPINE-CVE-2025-64720
PUBLISHED
CVSS 7.099999904632568 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 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.
Risk Scores
CVSS 3.1
7.099999904632568
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.24 | libpng | 1.6.0 |
| Alpine:v3.23 | libpng | 1.6.22-r0, 1.6.21-r0, 1.6.20-r0 |
| Alpine:v3.20 | libpng | 1.4.5-r0, 1.6.37-r0, 0 |
| Alpine:v3.22 | libpng | 1.6.39-r1, 1.6.3-r0, 1.6.31-r0 |
| Alpine:v3.21 | libpng | 1.6.0, 1.6.9-r0, 1.6.8-r0 |
Timeline
- Nov 25, 2025 CVE Published
- Apr 30, 2026 Distribution Patch
- Jul 8, 2026 CVE Updated