{
    "id": "CVE-2016-1960",
    "published": "2016-03-13 18:59:09",
    "last_modified": "2026-06-17 00:42:58",
    "cvss_score": "8.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "cwe": null,
    "description": "Integer underflow in the nsHtml5TreeBuilder class in the HTML5 string parser in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) by leveraging mishandling of end tags, as demonstrated by incorrect SVG processing, aka ZDI-CAN-3545.",
    "epss_score": "0.30946",
    "epss_percentile": "0.98206",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-29 18:17:15",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "mozilla",
            "product": "firefox"
        },
        {
            "vendor": "mozilla",
            "product": "thunderbird"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        },
        {
            "vendor": "opensuse",
            "product": "opensuse"
        },
        {
            "vendor": "oracle",
            "product": "linux"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "44294",
            "title": "Firefox 44.0.2 - ASM.JS JIT-Spray Remote Code Execution",
            "date": "2018-03-16",
            "url": "https://www.exploit-db.com/exploits/44294"
        },
        {
            "source": "exploit-db",
            "ref_id": "42484",
            "title": "Mozilla Firefox < 45.0 - 'nsHtml5TreeBuilder' Use-After-Free (EMET 5.52 Bypass)",
            "date": "2017-08-18",
            "url": "https://www.exploit-db.com/exploits/42484"
        }
    ],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00027.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00029.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00031.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00050.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00068.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00089.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00091.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00093.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00006.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00007.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00008.html",
        "http://www.debian.org/security/2016/dsa-3510",
        "http://www.debian.org/security/2016/dsa-3520",
        "http://www.mozilla.org/security/announce/2016/mfsa2016-23.html",
        "http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html",
        "http://www.securitytracker.com/id/1035215",
        "http://www.ubuntu.com/usn/USN-2917-1",
        "http://www.ubuntu.com/usn/USN-2917-2",
        "http://www.ubuntu.com/usn/USN-2917-3",
        "http://www.ubuntu.com/usn/USN-2934-1",
        "http://zerodayinitiative.com/advisories/ZDI-16-198/",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1246014",
        "https://security.gentoo.org/glsa/201605-06",
        "https://www.exploit-db.com/exploits/42484/",
        "https://www.exploit-db.com/exploits/44294/"
    ]
}