LIBPNG has an out-of-bounds read in png_image_read_composite_CVE-2025-66293

7.1 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

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.

Basic Information

ID CVE-2025-66293

Source GitHub_M

Published Dec 3, 2025 at 20:33

Modified Dec 3, 2025 at 20:55

Affected Product

Vendor pnggroup

Product libpng

Version < 1.6.52

Affected Versions pnggroup libpng < 1.6.52

CWE Classification

CWE-125

References

{
    "lastseen": "",
    "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.",
    "published": "2025-12-03T20:33:57.086Z",
    "modified": "2025-12-03T20:55:03.573Z",
    "type": "cve",
    "title": "LIBPNG has an out-of-bounds read in png_image_read_composite",
    "source": "GitHub_M",
    "references": "https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f\nhttps://github.com/pnggroup/libpng/issues/764\nhttps://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1\nhttps://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484a",
    "id": "CVE-2025-66293",
    "bulletinFamily": "",
    "cwe": [
        "CWE-125"
    ],
    "cvelist": null,
    "sourceData": "pnggroup libpng < 1.6.52",
    "sourceHref": "",
    "cvss": {
        "score": 7.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "libpng",
    "version": "< 1.6.52",
    "vendor": "pnggroup",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}