CVE-2025-66293

Published Dec 3, 2025

Last updated 2 months ago

CVSS high 7.1

Overview

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.
Source: security-advisories@github.com
NVD status: Analyzed
Products: libpng

Risk scores

CVSS 3.1

Type: Secondary
Base score: 7.1
Impact score: 4.2
Exploitability score: 2.8
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Severity: HIGH

Weaknesses

security-advisories@github.com: CWE-125

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "98FBE7B9-73DC-483B-87E8-5229792557C3",
            "versionEndExcluding": "1.6.52",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 3.1

Weaknesses

Social media

Configurations

Related CVEs

References