{
    "id": "CVE-2016-6303",
    "published": "2016-09-16 05:59:13",
    "last_modified": "2026-06-17 00:50:47",
    "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-787",
    "description": "Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or possibly have unspecified other impact via unknown vectors.",
    "epss_score": "0.31985",
    "epss_percentile": "0.98265",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-03 18:17:16",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 32% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "nodejs",
            "product": "node.js"
        },
        {
            "vendor": "openssl",
            "product": "openssl"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759",
        "http://www-01.ibm.com/support/docview.wss?uid=swg21995039",
        "http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html",
        "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html",
        "http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html",
        "http://www.securityfocus.com/bid/92984",
        "http://www.securitytracker.com/id/1036885",
        "https://bto.bluecoat.com/security-advisory/sa132",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1370146",
        "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
        "https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=55d83bf7c10c7b205fffa23fa7c3977491e56c07",
        "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312",
        "https://nodejs.org/en/blog/vulnerability/september-2016-security-releases/",
        "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc",
        "https://www.tenable.com/security/tns-2016-16",
        "https://www.tenable.com/security/tns-2016-20",
        "https://www.tenable.com/security/tns-2016-21",
        "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759",
        "http://www-01.ibm.com/support/docview.wss?uid=swg21995039",
        "http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html",
        "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html",
        "http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html"
    ]
}