{
    "id": "CVE-2018-12387",
    "published": "2018-10-18 13:29:06",
    "last_modified": "2026-06-17 01:37:41",
    "cvss_score": "9.1",
    "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:N/A:H",
    "cwe": "CWE-20",
    "description": "A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.",
    "epss_score": "0.09590",
    "epss_percentile": "0.95343",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 18:17:17",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.1), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "mozilla",
            "product": "firefox"
        },
        {
            "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_server_tus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_workstation"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://www.securityfocus.com/bid/105460",
        "http://www.securitytracker.com/id/1041770",
        "https://access.redhat.com/errata/RHSA-2018:2881",
        "https://access.redhat.com/errata/RHSA-2018:2884",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1493903",
        "https://security.gentoo.org/glsa/201810-01",
        "https://usn.ubuntu.com/3778-1/",
        "https://www.debian.org/security/2018/dsa-4310",
        "https://www.mozilla.org/security/advisories/mfsa2018-24/",
        "http://www.securityfocus.com/bid/105460",
        "http://www.securitytracker.com/id/1041770",
        "https://access.redhat.com/errata/RHSA-2018:2881",
        "https://access.redhat.com/errata/RHSA-2018:2884",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1493903",
        "https://security.gentoo.org/glsa/201810-01",
        "https://usn.ubuntu.com/3778-1/",
        "https://www.debian.org/security/2018/dsa-4310",
        "https://www.mozilla.org/security/advisories/mfsa2018-24/"
    ]
}