{
    "id": "CVE-2018-7842",
    "published": "2019-05-22 20:29:01",
    "last_modified": "2026-06-17 02:03:50",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-290",
    "description": "A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause an elevation of privilege by conducting a brute force attack on Modbus parameters sent to the controller.",
    "epss_score": "0.35039",
    "epss_percentile": "0.98396",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-02 18:17:22",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 35% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "schneider-electric",
            "product": "modicon_m340"
        },
        {
            "vendor": "schneider-electric",
            "product": "modicon_m340_firmware"
        },
        {
            "vendor": "schneider-electric",
            "product": "modicon_m580"
        },
        {
            "vendor": "schneider-electric",
            "product": "modicon_m580_firmware"
        },
        {
            "vendor": "schneider-electric",
            "product": "modicon_premium"
        },
        {
            "vendor": "schneider-electric",
            "product": "modicon_premium_firmware"
        },
        {
            "vendor": "schneider-electric",
            "product": "modicon_quantum"
        },
        {
            "vendor": "schneider-electric",
            "product": "modicon_quantum_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/",
        "https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0741",
        "https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/",
        "https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0741"
    ]
}