{
    "id": "CVE-2017-5396",
    "published": "2018-06-11 21:29:03",
    "last_modified": "2026-06-17 01:20:23",
    "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-416",
    "description": "A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.",
    "epss_score": "0.04097",
    "epss_percentile": "0.90477",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-08 18:17:18",
    "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": "mozilla",
            "product": "firefox"
        },
        {
            "vendor": "mozilla",
            "product": "thunderbird"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_desktop"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_aus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_workstation"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://rhn.redhat.com/errata/RHSA-2017-0190.html",
        "http://rhn.redhat.com/errata/RHSA-2017-0238.html",
        "http://www.securityfocus.com/bid/95769",
        "http://www.securitytracker.com/id/1037693",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1329403",
        "https://security.gentoo.org/glsa/201702-13",
        "https://security.gentoo.org/glsa/201702-22",
        "https://www.debian.org/security/2017/dsa-3771",
        "https://www.debian.org/security/2017/dsa-3832",
        "https://www.mozilla.org/security/advisories/mfsa2017-01/",
        "https://www.mozilla.org/security/advisories/mfsa2017-02/",
        "https://www.mozilla.org/security/advisories/mfsa2017-03/",
        "http://rhn.redhat.com/errata/RHSA-2017-0190.html",
        "http://rhn.redhat.com/errata/RHSA-2017-0238.html",
        "http://www.securityfocus.com/bid/95769",
        "http://www.securitytracker.com/id/1037693",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1329403",
        "https://security.gentoo.org/glsa/201702-13",
        "https://security.gentoo.org/glsa/201702-22",
        "https://www.debian.org/security/2017/dsa-3771",
        "https://www.debian.org/security/2017/dsa-3832",
        "https://www.mozilla.org/security/advisories/mfsa2017-01/",
        "https://www.mozilla.org/security/advisories/mfsa2017-02/",
        "https://www.mozilla.org/security/advisories/mfsa2017-03/"
    ]
}