{
    "id": "CVE-2011-3486",
    "published": "2011-09-16 14:28:11",
    "last_modified": "2026-06-16 23:33:20",
    "cvss_score": "5.0",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
    "cwe": "CWE-119",
    "description": "Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.",
    "epss_score": "0.49650",
    "epss_percentile": "0.98857",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:18:04",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "beckhoff",
            "product": "twincat"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "17835",
            "title": "Beckhoff TwinCAT 2.11.0.2004 - Denial of Service",
            "date": "2011-09-14",
            "url": "https://www.exploit-db.com/exploits/17835"
        }
    ],
    "refs_list": [
        "http://aluigi.altervista.org/adv/twincat_1-adv.txt",
        "http://osvdb.org/75495",
        "http://securityreason.com/securityalert/8380",
        "http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-06.pdf",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/69765",
        "http://aluigi.altervista.org/adv/twincat_1-adv.txt",
        "http://osvdb.org/75495",
        "http://securityreason.com/securityalert/8380",
        "http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-06.pdf",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/69765"
    ]
}