CVE-2025-66293

Advisory lineage Upstream: 0 Downstream: 31
Analyzed
Published: 03 Dec 2025, 20:33
Last modified:04 Dec 2025, 01:31

Vulnerability Summary

Overall Risk (default)
medium
38/100
CVSS Score
7.1 HIGH
v3.1 (cve.org)
EPSS Score
0.12% LOW
0% probability +0.03%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

03 Dec 2025, 20:33
Published
Vulnerability first disclosed
04 Dec 2025, 01:31
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 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. The PNG files that trigger this vulnerability are valid per the PNG specification; the bug is in libpng's internal state management. Upgrade to libpng 1.6.52 or later.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

EPSS Trends

Current EPSS score: 0.12%• Percentile: 30%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • libpng•libpng

    < 1.6.52

  • pnggroup•libpng

    < 1.6.52

References (7)