{
    "id": "CVE-2011-4879",
    "published": "2012-02-03 20:55:02",
    "last_modified": "2026-06-16 23:35:33",
    "cvss_score": "8.5",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:P/I:N/A:C",
    "cwe": "CWE-20",
    "description": "miniweb.exe in the HMI web server in Siemens WinCC flexible 2004, 2005, 2007, and 2008 before SP3; WinCC V11 (aka TIA portal) before SP2 Update 1; the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime does not properly handle URIs beginning with a 0xfa character, which allows remote attackers to read data from arbitrary memory locations or cause a denial of service (application crash) via a crafted POST request.",
    "epss_score": "0.12105",
    "epss_percentile": "0.96033",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-02 18:17:11",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "siemens",
            "product": "simatic_hmi_panels"
        },
        {
            "vendor": "siemens",
            "product": "wincc"
        },
        {
            "vendor": "siemens",
            "product": "wincc_flexible"
        },
        {
            "vendor": "siemens",
            "product": "wincc_flexible_runtime"
        },
        {
            "vendor": "siemens",
            "product": "wincc_runtime_advanced"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "18166",
            "title": "Siemens SIMATIC WinCC Flexible (Runtime) - Multiple Vulnerabilities",
            "date": "2011-11-28",
            "url": "https://www.exploit-db.com/exploits/18166"
        }
    ],
    "refs_list": [
        "http://aluigi.org/adv/winccflex_1-adv.txt",
        "http://www.exploit-db.com/exploits/18166",
        "http://www.osvdb.org/77384",
        "http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf",
        "http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02.pdf",
        "http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02A.pdf",
        "http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/71453",
        "http://aluigi.org/adv/winccflex_1-adv.txt",
        "http://www.exploit-db.com/exploits/18166",
        "http://www.osvdb.org/77384",
        "http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf",
        "http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02.pdf",
        "http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02A.pdf",
        "http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/71453"
    ]
}