{
    "id": "CVE-2019-5081",
    "published": "2019-12-18 20:15:16",
    "last_modified": "2026-06-17 02:37:06",
    "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-787",
    "description": "An exploitable heap buffer overflow vulnerability exists in the iocheckd service ''I/O-Chec'' functionality of WAGO PFC 200 Firmware version 03.01.07(13) and 03.00.39(12), and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a heap buffer overflow, potentially resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.",
    "epss_score": "0.04521",
    "epss_percentile": "0.91272",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-07 18:17:21",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "wago",
            "product": "pfc_100"
        },
        {
            "vendor": "wago",
            "product": "pfc_100_firmware"
        },
        {
            "vendor": "wago",
            "product": "pfc_200"
        },
        {
            "vendor": "wago",
            "product": "pfc_200_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0873",
        "https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0874",
        "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0873",
        "https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0874"
    ]
}