{
    "id": "CVE-2020-12388",
    "published": "2020-05-26 18:15:11",
    "last_modified": "2026-06-17 02:51:44",
    "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": "The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8 and Firefox < 76.",
    "epss_score": "0.03438",
    "epss_percentile": "0.88651",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-09 18:17:24",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (10), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "windows"
        },
        {
            "vendor": "mozilla",
            "product": "firefox"
        },
        {
            "vendor": "mozilla",
            "product": "firefox_esr"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://packetstormsecurity.com/files/157860/Firefox-Default-Content-Process-DACL-Sandbox-Escape.html",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1618911",
        "https://www.mozilla.org/security/advisories/mfsa2020-16/",
        "https://www.mozilla.org/security/advisories/mfsa2020-17/",
        "http://packetstormsecurity.com/files/157860/Firefox-Default-Content-Process-DACL-Sandbox-Escape.html",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1618911",
        "https://www.mozilla.org/security/advisories/mfsa2020-16/",
        "https://www.mozilla.org/security/advisories/mfsa2020-17/"
    ]
}