{
    "id": "CVE-2020-27263",
    "published": "2021-01-14 00:15:13",
    "last_modified": "2026-06-17 03:09:04",
    "cvss_score": "9.1",
    "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:N/A:H",
    "cwe": "CWE-122",
    "description": "KEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All versions, OPC-Aggregator: All versions, Rockwell Automation KEPServer Enterprise, GE Digital Industrial Gateway Server: v7.68.804 and v7.66, Software Toolbox TOP Server: All 6.x versions, are vulnerable to a heap-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and potentially leak data.",
    "epss_score": "0.04941",
    "epss_percentile": "0.91924",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-07 18:17:23",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.1), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "ge",
            "product": "industrial_gateway_server"
        },
        {
            "vendor": "ptc",
            "product": "kepware_kepserverex"
        },
        {
            "vendor": "ptc",
            "product": "opc-aggregator"
        },
        {
            "vendor": "ptc",
            "product": "thingworx_industrial_connectivity"
        },
        {
            "vendor": "ptc",
            "product": "thingworx_kepware_server"
        },
        {
            "vendor": "rockwellautomation",
            "product": "kepserver_enterprise"
        },
        {
            "vendor": "softwaretoolbox",
            "product": "top_server"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://us-cert.cisa.gov/ics/advisories/icsa-20-352-02",
        "https://us-cert.cisa.gov/ics/advisories/icsa-20-352-02"
    ]
}