VDB
ALPINE-CVE-2025-64505
ALPINE-CVE-2025-64505
PUBLISHED
CVSS 6.099999904632568 MEDIUM
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to version 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_do_quantize function when processing PNG files with malformed palette indices. The vulnerability occurs when palette_lookup array bounds are not validated against externally-supplied image data, allowing an attacker to craft a PNG file with out-of-range palette indices that trigger out-of-bounds memory access. This issue has been patched in version 1.6.51.
Risk Scores
CVSS 3.1
6.099999904632568
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.22 | libpng | 0, 1.6.25-r0, 1.6.34-r0 |
| Alpine:v3.23 | libpng | 1.5.4-r0, 1.5.15-r0, 0 |
| Alpine:v3.20 | libpng | 1.6.3-r0, 1.2.36-r0, 1.2.37-r0 |
| Alpine:v3.24 | libpng | 0 |
| Alpine:v3.21 | libpng | 1.2.38-r0, 1.2.40-r0, 1.6.41-r0 |
Timeline
- Nov 25, 2025 CVE Published
- Jun 15, 2026 CVE Updated
- Aug 8, 2026 Distribution Patch