{
    "id": "CVE-2022-0547",
    "published": "2022-03-18 18:15:12",
    "last_modified": "2026-06-17 04:20:49",
    "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-305",
    "description": "OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials.",
    "epss_score": "0.03574",
    "epss_percentile": "0.89088",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-09 18:17:30",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "openvpn",
            "product": "openvpn"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://community.openvpn.net/openvpn/wiki/CVE-2022-0547",
        "https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements",
        "https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/",
        "https://openvpn.net/community-downloads/",
        "https://community.openvpn.net/openvpn/wiki/CVE-2022-0547",
        "https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements",
        "https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00005.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJ35WKPME4HYNQCQNAJHLCZOJL2SAE/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R36OYC5SJ6FLPVAYJYYT4MOJ2I7MGYFF/",
        "https://openvpn.net/community-downloads/"
    ]
}