ALPINE-CVE-2025-64505

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2025-64505
Published: 25 Nov 2025, 00:15
Last modified:08 Dec 2025, 15:11

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
6.1 MEDIUM
3.1 (osv_alpine)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Nov 2025, 00:15
Published
Vulnerability first disclosed
08 Dec 2025, 15:11
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Affected Systems

  • alpine•libpng

    < 1.6.53-r0 | < 1.6.53-r0 | < 1.6.51-r0 | < 1.6.51-r0

References (1)