{
    "id": "CVE-2020-12823",
    "published": "2020-05-12 18:15:13",
    "last_modified": "2026-06-17 02:52:22",
    "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-120",
    "description": "OpenConnect 8.09 has a buffer overflow, causing a denial of service (application crash) or possibly unspecified other impact, via crafted certificate data to get_cert_name in gnutls.c.",
    "epss_score": "0.04743",
    "epss_percentile": "0.91628",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-07 18:17:22",
    "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": "infradead",
            "product": "openconnect"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00039.html",
        "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00056.html",
        "https://bugs.gentoo.org/721570",
        "https://gitlab.com/openconnect/openconnect/-/merge_requests/108",
        "https://lists.debian.org/debian-lts-announce/2020/05/msg00015.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25MFX4AZE7RDCUWOL4ZOE73YBOPUMQDX/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYSXLXAPXD2T73T6JMHI5G2WP7KHAGMN/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEVTIH5UFX35CC7MVSYBGRM3D66ACFD5/",
        "https://security.gentoo.org/glsa/202006-15",
        "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00039.html",
        "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00056.html",
        "https://bugs.gentoo.org/721570",
        "https://gitlab.com/openconnect/openconnect/-/merge_requests/108",
        "https://lists.debian.org/debian-lts-announce/2020/05/msg00015.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25MFX4AZE7RDCUWOL4ZOE73YBOPUMQDX/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYSXLXAPXD2T73T6JMHI5G2WP7KHAGMN/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEVTIH5UFX35CC7MVSYBGRM3D66ACFD5/",
        "https://security.gentoo.org/glsa/202006-15"
    ]
}