{
    "id": "CVE-2019-6553",
    "published": "2019-04-04 19:29:01",
    "last_modified": "2026-06-17 02:39:14",
    "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-121",
    "description": "A vulnerability was found in Rockwell Automation RSLinx Classic versions 4.10.00 and prior. An input validation issue in a .dll file of RSLinx Classic where the data in a Forward Open service request is passed to a fixed size buffer, allowing an attacker to exploit a stack-based buffer overflow condition.",
    "epss_score": "0.66107",
    "epss_percentile": "0.99255",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-09-30 18:17:23",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 66.1% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "rockwellautomation",
            "product": "rslinx"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://ics-cert.us-cert.gov/advisories/ICSA-19-064-01",
        "https://ics-cert.us-cert.gov/advisories/ICSA-19-064-01"
    ]
}