{
    "id": "CVE-2021-3773",
    "published": "2022-02-16 19:15:08",
    "last_modified": "2026-06-17 04:05:44",
    "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-200",
    "description": "A flaw in netfilter could allow a network-connected attacker to infer openvpn connection endpoint information for further use in traditional network attacks.",
    "epss_score": "0.05279",
    "epss_percentile": "0.92354",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-07 18:17:26",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "linux",
            "product": "linux_kernel"
        },
        {
            "vendor": "oracle",
            "product": "communications_cloud_native_core_binding_support_function"
        },
        {
            "vendor": "oracle",
            "product": "communications_cloud_native_core_network_exposure_function"
        },
        {
            "vendor": "oracle",
            "product": "communications_cloud_native_core_policy"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://bugzilla.redhat.com/show_bug.cgi?id=2004949",
        "https://citizenlab.ca/2024/07/vulnerabilities-in-vpns-paper-presented-at-the-privacy-enhancing-technologies-symposium-2024/",
        "https://www.oracle.com/security-alerts/cpujul2022.html",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2004949",
        "https://citizenlab.ca/2024/07/vulnerabilities-in-vpns-paper-presented-at-the-privacy-enhancing-technologies-symposium-2024/",
        "https://security.netapp.com/advisory/ntap-20250328-0004/",
        "https://www.oracle.com/security-alerts/cpujul2022.html"
    ]
}