LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication_CVE-2025-64720

{
    "lastseen": "",
    "description": "LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component \u2264 alpha \u00d7 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.",
    "published": "2025-11-24T23:45:38.315Z",
    "modified": "2025-11-24T23:45:38.315Z",
    "type": "cve",
    "title": "LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication",
    "source": "GitHub_M",
    "references": "https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww\nhttps://github.com/pnggroup/libpng/issues/686\nhttps://github.com/pnggroup/libpng/pull/751\nhttps://github.com/pnggroup/libpng/commit/08da33b4c88cfcd36e5a706558a8d7e0e4773643",
    "id": "CVE-2025-64720",
    "bulletinFamily": "",
    "cwe": [
        "CWE-125"
    ],
    "cvelist": null,
    "sourceData": "pnggroup libpng >= 1.6.0, < 1.6.51",
    "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": ">= 1.6.0, < 1.6.51",
    "vendor": "pnggroup",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}