{
    "id": "CVE-2016-2339",
    "published": "2017-01-06 21:59:00",
    "last_modified": "2026-06-17 00:43:51",
    "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-119",
    "description": "An exploitable heap overflow vulnerability exists in the Fiddle::Function.new \"initialize\" function functionality of Ruby. In Fiddle::Function.new \"initialize\" heap buffer \"arg_types\" allocation is made based on args array length. Specially constructed object passed as element of args array can increase this array size after mentioned allocation and cause heap overflow.",
    "epss_score": "0.05144",
    "epss_percentile": "0.92195",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-07 18:17:14",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "ruby-lang",
            "product": "ruby"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://www.securityfocus.com/bid/91234",
        "http://www.talosintelligence.com/reports/TALOS-2016-0034/",
        "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html",
        "http://www.securityfocus.com/bid/91234",
        "http://www.talosintelligence.com/reports/TALOS-2016-0034/",
        "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"
    ]
}