{
    "id": "CVE-2023-45853",
    "published": "2023-10-14 02:15:09",
    "last_modified": "2026-07-14 13:17:02",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-190",
    "description": "MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API.",
    "epss_score": "0.03179",
    "epss_percentile": "0.87705",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-10 18:17:34",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "smihica",
            "product": "pyminizip"
        },
        {
            "vendor": "zlib",
            "product": "zlib"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://www.openwall.com/lists/oss-security/2023/10/20/9",
        "http://www.openwall.com/lists/oss-security/2024/01/24/10",
        "https://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356",
        "https://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61",
        "https://github.com/madler/zlib/blob/ac8f12c97d1afd9bafa9c710f827d40a407d3266/contrib/README.contrib#L1-L4",
        "https://github.com/madler/zlib/pull/843",
        "https://lists.debian.org/debian-lts-announce/2023/11/msg00026.html",
        "https://pypi.org/project/pyminizip/#history",
        "https://security.gentoo.org/glsa/202401-18",
        "https://security.netapp.com/advisory/ntap-20231130-0009/",
        "https://www.winimage.com/zLibDll/minizip.html",
        "http://www.openwall.com/lists/oss-security/2023/10/20/9",
        "http://www.openwall.com/lists/oss-security/2024/01/24/10",
        "https://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356",
        "https://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61",
        "https://github.com/madler/zlib/blob/ac8f12c97d1afd9bafa9c710f827d40a407d3266/contrib/README.contrib#L1-L4",
        "https://github.com/madler/zlib/pull/843",
        "https://lists.debian.org/debian-lts-announce/2023/11/msg00026.html",
        "https://pypi.org/project/pyminizip/#history",
        "https://security.gentoo.org/glsa/202401-18",
        "https://security.netapp.com/advisory/ntap-20231130-0009/",
        "https://www.winimage.com/zLibDll/minizip.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-470355.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-769027.html"
    ]
}