{
    "id": "CVE-2017-12178",
    "published": "2018-01-24 15:29:00",
    "last_modified": "2026-06-17 01:02:50",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-391",
    "description": "xorg-x11-server before 1.19.5 had wrong extra length check in ProcXIChangeHierarchy function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.",
    "epss_score": "0.04423",
    "epss_percentile": "0.91094",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-07 18:17:15",
    "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": "x.org",
            "product": "x_server"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://bugzilla.redhat.com/show_bug.cgi?id=1509219",
        "https://cgit.freedesktop.org/xorg/xserver/commit/?id=859b08d523307eebde7724fd1a0789c44813e821",
        "https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html",
        "https://security.gentoo.org/glsa/201711-05",
        "https://www.debian.org/security/2017/dsa-4000",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1509219",
        "https://cgit.freedesktop.org/xorg/xserver/commit/?id=859b08d523307eebde7724fd1a0789c44813e821",
        "https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html",
        "https://security.gentoo.org/glsa/201711-05",
        "https://www.debian.org/security/2017/dsa-4000"
    ]
}