{
    "id": "CVE-2011-4531",
    "published": "2012-01-08 20:55:01",
    "last_modified": "2026-06-16 23:35:00",
    "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-20",
    "description": "Siemens Automation License Manager (ALM) 4.0 through 5.1+SP1+Upd1 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted content in a (1) get_target_ocx_param or (2) send_target_ocx_param command.",
    "epss_score": "0.08406",
    "epss_percentile": "0.94804",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-28 18:17:10",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "siemens",
            "product": "automation_license_manager"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "18165",
            "title": "siemens automation license manager 500.0.122.1 - Multiple Vulnerabilities",
            "date": "2011-11-28",
            "url": "https://www.exploit-db.com/exploits/18165"
        }
    ],
    "refs_list": [
        "http://aluigi.altervista.org/adv/almsrvx_1-adv.txt",
        "http://support.automation.siemens.com/WW/llisapi.dll/57252401?func=ll&objId=57252401&objAction=csView&nodeid0=17323948&lang=en&siteid=cseus&aktprim=0&extranet=standard&viewreg=WW&load=content",
        "http://support.automation.siemens.com/WW/view/en/114358",
        "http://www.us-cert.gov/control_systems/pdf/ICSA-11-361-01.pdf",
        "http://aluigi.altervista.org/adv/almsrvx_1-adv.txt",
        "http://support.automation.siemens.com/WW/llisapi.dll/57252401?func=ll&objId=57252401&objAction=csView&nodeid0=17323948&lang=en&siteid=cseus&aktprim=0&extranet=standard&viewreg=WW&load=content",
        "http://support.automation.siemens.com/WW/view/en/114358",
        "http://www.us-cert.gov/control_systems/pdf/ICSA-11-361-01.pdf"
    ]
}