{
    "id": "CVE-2016-5257",
    "published": "2016-09-22 22:59:02",
    "last_modified": "2026-06-17 00:49:03",
    "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": "Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4 and Thunderbird < 45.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.",
    "epss_score": "0.04243",
    "epss_percentile": "0.90778",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-08 18:17:16",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "mozilla",
            "product": "firefox"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://rhn.redhat.com/errata/RHSA-2016-1912.html",
        "http://rhn.redhat.com/errata/RHSA-2016-1985.html",
        "http://www.debian.org/security/2016/dsa-3674",
        "http://www.debian.org/security/2016/dsa-3690",
        "http://www.mozilla.org/security/announce/2016/mfsa2016-85.html",
        "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html",
        "http://www.securityfocus.com/bid/93049",
        "http://www.securitytracker.com/id/1036852",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1277213",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1287204",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1288555",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1288588",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1288780",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1289280",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1293347",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1294095",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1294407",
        "https://security.gentoo.org/glsa/201701-15",
        "https://www.mozilla.org/security/advisories/mfsa2016-86/",
        "https://www.mozilla.org/security/advisories/mfsa2016-88/",
        "http://rhn.redhat.com/errata/RHSA-2016-1912.html",
        "http://rhn.redhat.com/errata/RHSA-2016-1985.html",
        "http://www.debian.org/security/2016/dsa-3674",
        "http://www.debian.org/security/2016/dsa-3690",
        "http://www.mozilla.org/security/announce/2016/mfsa2016-85.html"
    ]
}