{
    "id": "CVE-2019-11708",
    "published": "2019-07-23 14:15:15",
    "last_modified": "2026-06-17 02:13:28",
    "cvss_score": "10.0",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
    "cwe": "CWE-20",
    "description": "Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing arbitrary code on the user's computer. This vulnerability affects Firefox ESR < 60.7.2, Firefox < 67.0.4, and Thunderbird < 60.7.2.",
    "epss_score": "0.55874",
    "epss_percentile": "0.99014",
    "kev": 1,
    "kev_due": "2022-06-13",
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:24:30",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-06-13."
    },
    "products": [
        {
            "vendor": "mozilla",
            "product": "firefox"
        },
        {
            "vendor": "mozilla",
            "product": "thunderbird"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2019-11708",
        "date_added": "2022-05-23",
        "due_date": "2022-06-13",
        "vendor": "Mozilla",
        "product": "Firefox and Thunderbird",
        "name": "Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability",
        "ransomware": 0
    },
    "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"
        }
    ],
    "refs_list": [
        "http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1559858",
        "https://security.gentoo.org/glsa/201908-12",
        "https://www.mozilla.org/security/advisories/mfsa2019-19/",
        "https://www.mozilla.org/security/advisories/mfsa2019-20/",
        "http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1559858",
        "https://security.gentoo.org/glsa/201908-12",
        "https://www.mozilla.org/security/advisories/mfsa2019-19/",
        "https://www.mozilla.org/security/advisories/mfsa2019-20/",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11708"
    ]
}