{
    "id": "CVE-2020-36242",
    "published": "2021-02-07 20:15:12",
    "last_modified": "2026-06-17 03:15:11",
    "cvss_score": "9.1",
    "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:N/A:H",
    "cwe": "CWE-190",
    "description": "In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.",
    "epss_score": "0.06718",
    "epss_percentile": "0.93738",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 18:17:23",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.1), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "cryptography.io",
            "product": "cryptography"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "oracle",
            "product": "communications_cloud_native_core_network_function_cloud_native_environment"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst",
        "https://github.com/pyca/cryptography/compare/3.3.1...3.3.2",
        "https://github.com/pyca/cryptography/issues/5615",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7RGQLK4J5ZQFRLKCHVVG6BKZTUQMG7E/",
        "https://www.oracle.com/security-alerts/cpuapr2022.html",
        "https://www.oracle.com/security-alerts/cpujul2022.html",
        "https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst",
        "https://github.com/pyca/cryptography/compare/3.3.1...3.3.2",
        "https://github.com/pyca/cryptography/issues/5615",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7RGQLK4J5ZQFRLKCHVVG6BKZTUQMG7E/",
        "https://www.oracle.com/security-alerts/cpuapr2022.html",
        "https://www.oracle.com/security-alerts/cpujul2022.html"
    ]
}