{
    "id": "CVE-2019-9810",
    "published": "2019-04-26 17:29:04",
    "last_modified": "2026-06-17 02:44:38",
    "cvss_score": "8.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "cwe": "CWE-119",
    "description": "Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.",
    "epss_score": "0.29729",
    "epss_percentile": "0.98142",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-28 18:17:24",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "mozilla",
            "product": "firefox"
        },
        {
            "vendor": "mozilla",
            "product": "thunderbird"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_aus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_tus"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "47752",
            "title": "Mozilla FireFox (Windows 10 x64) - Full Chain Client Side Attack",
            "date": "2019-12-07",
            "url": "https://www.exploit-db.com/exploits/47752"
        },
        {
            "source": "exploit-db",
            "ref_id": "46605",
            "title": "Firefox < 66.0.1 - 'Array.prototype.slice' Buffer Overflow",
            "date": "2019-03-26",
            "url": "https://www.exploit-db.com/exploits/46605"
        }
    ],
    "refs_list": [
        "http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html",
        "https://access.redhat.com/errata/RHSA-2019:0966",
        "https://access.redhat.com/errata/RHSA-2019:1144",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1537924",
        "https://www.mozilla.org/security/advisories/mfsa2019-09/",
        "https://www.mozilla.org/security/advisories/mfsa2019-10/",
        "https://www.mozilla.org/security/advisories/mfsa2019-12/",
        "http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html",
        "https://access.redhat.com/errata/RHSA-2019:0966",
        "https://access.redhat.com/errata/RHSA-2019:1144",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1537924",
        "https://www.mozilla.org/security/advisories/mfsa2019-09/",
        "https://www.mozilla.org/security/advisories/mfsa2019-10/",
        "https://www.mozilla.org/security/advisories/mfsa2019-12/"
    ]
}