{
    "id": "CVE-2018-14599",
    "published": "2018-08-24 19:29:01",
    "last_modified": "2026-06-17 01:41:15",
    "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-193",
    "description": "An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is vulnerable to an off-by-one error caused by malicious server responses, leading to DoS or possibly unspecified other impact.",
    "epss_score": "0.04799",
    "epss_percentile": "0.91711",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-07 18:17:17",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_desktop"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_workstation"
        },
        {
            "vendor": "x.org",
            "product": "libx11"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://www.openwall.com/lists/oss-security/2018/08/21/6",
        "http://www.securityfocus.com/bid/105177",
        "http://www.securitytracker.com/id/1041543",
        "https://access.redhat.com/errata/RHSA-2019:2079",
        "https://bugzilla.suse.com/show_bug.cgi?id=1102062",
        "https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=b469da1430cdcee06e31c6251b83aede072a1ff0",
        "https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGARUV66TS5OOSLR5A76BUB7SDV6GO4F/",
        "https://lists.x.org/archives/xorg-announce/2018-August/002916.html",
        "https://security.gentoo.org/glsa/201811-01",
        "https://usn.ubuntu.com/3758-1/",
        "https://usn.ubuntu.com/3758-2/",
        "http://www.openwall.com/lists/oss-security/2018/08/21/6",
        "http://www.securityfocus.com/bid/105177",
        "http://www.securitytracker.com/id/1041543",
        "https://access.redhat.com/errata/RHSA-2019:2079",
        "https://bugzilla.suse.com/show_bug.cgi?id=1102062",
        "https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=b469da1430cdcee06e31c6251b83aede072a1ff0",
        "https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGARUV66TS5OOSLR5A76BUB7SDV6GO4F/",
        "https://lists.x.org/archives/xorg-announce/2018-August/002916.html",
        "https://security.gentoo.org/glsa/201811-01",
        "https://usn.ubuntu.com/3758-1/",
        "https://usn.ubuntu.com/3758-2/"
    ]
}