{"id":"CVE-2011-4877","aliases":["EUVD-2011-4794","GHSA-8wq6-wppf-wxxh"],"status":"published","title":"HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 ...","description":"HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime, when Transfer Mode is enabled, allows remote attackers to cause a denial of service (application crash) by sending crafted data over TCP.","severity":{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.07259,"percentile":0.94384,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-20"],"published":"2012-02-03T20:00:00Z","modified":"2026-06-16T23:35:33Z","exploits":[{"source":"exploitdb","id":"EDB-18166","title":"Siemens SIMATIC WinCC Flexible (Runtime) - Multiple Vulnerabilities","type":"dos","platform":"windows","date":"2011-11-28","verified":true,"url":"https://www.exploit-db.com/exploits/18166"}],"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"}],"references":[{"url":"http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02.pdf","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02A.pdf","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://www.exploit-db.com/exploits/18166","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"http://aluigi.org/adv/winccflex_1-adv.txt","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/71451","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.osvdb.org/77382","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf","tags":["x_refsource_MISC","x_transferred","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4877"},{"url":"https://github.com/advisories/GHSA-8wq6-wppf-wxxh"}],"sources":{"cve":[{"id":"CVE-2011-4877","description":"HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime, when Transfer Mode is enabled, allows remote attackers to cause a denial of service (application crash) by sending crafted data over TCP.","status":"published","published":"2012-02-03T20:00:00Z","modified":"2024-08-07T00:16:35.178Z","updated_at":"2026-11-02T14:35:37.671707Z"}],"euvd":[{"id":"EUVD-2011-4794","description":"HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime, when Transfer Mode is enabled, allows remote attackers to cause a denial of service (application crash) by sending crafted data over TCP.","status":"published","published":"2012-02-03T20:00:00Z","modified":"2024-08-07T00:16:35Z","updated_at":"2026-11-03T01:39:48.106738Z"}],"ghsa":[{"id":"GHSA-8wq6-wppf-wxxh","title":"HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 ...","description":"HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime, when Transfer Mode is enabled, allows remote attackers to cause a denial of service (application crash) by sending crafted data over TCP.","status":"published","published":"2022-05-17T01:51:17Z","modified":"2023-02-03T05:05:31Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:53:45.336505Z"}],"nvd":[{"id":"CVE-2011-4877","description":"HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime, when Transfer Mode is enabled, allows remote attackers to cause a denial of service (application crash) by sending crafted data over TCP.","status":"published","published":"2012-02-03T20:55:01.983Z","modified":"2026-06-16T23:35:33.663Z","cvss":[{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:12.272092Z"}]}}