{"id":"CVE-2011-4531","aliases":["EUVD-2011-4457","GHSA-px66-m46c-vmhx"],"status":"published","title":"Siemens Automation License Manager (ALM) 4.0 through 5.1+SP1+Upd1 allows remote attackers to...","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.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.08406,"percentile":0.95022,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-20"],"published":"2012-01-08T20:00:00Z","modified":"2026-06-16T23:35:00Z","exploits":[{"source":"exploitdb","id":"EDB-18165","title":"siemens automation license manager 500.0.122.1 - Multiple Vulnerabilities","type":"dos","platform":"windows","date":"2011-11-28","verified":true,"url":"https://www.exploit-db.com/exploits/18165"}],"products":[{"vendor":"siemens","product":"automation_license_manager"}],"references":[{"url":"http://support.automation.siemens.com/WW/view/en/114358","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://aluigi.altervista.org/adv/almsrvx_1-adv.txt","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"http://support.automation.siemens.com/WW/llisapi.dll/57252401?func=ll\u0026objId=57252401\u0026objAction=csView\u0026nodeid0=17323948\u0026lang=en\u0026siteid=cseus\u0026aktprim=0\u0026extranet=standard\u0026viewreg=WW\u0026load=content","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://www.us-cert.gov/control_systems/pdf/ICSA-11-361-01.pdf","tags":["x_refsource_MISC","x_transferred","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4531"},{"url":"https://github.com/advisories/GHSA-px66-m46c-vmhx"}],"sources":{"cve":[{"id":"CVE-2011-4531","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.","status":"published","published":"2012-01-08T20:00:00Z","modified":"2024-09-17T02:36:36.991Z","updated_at":"2026-11-02T14:35:37.989579Z"}],"euvd":[{"id":"EUVD-2011-4457","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.","status":"published","published":"2012-01-08T20:00:00Z","modified":"2024-09-17T02:36:36Z","updated_at":"2026-11-03T00:28:39.162217Z"}],"ghsa":[{"id":"GHSA-px66-m46c-vmhx","title":"Siemens Automation License Manager (ALM) 4.0 through 5.1+SP1+Upd1 allows remote attackers to...","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.","status":"published","published":"2022-05-17T05:35:56Z","modified":"2023-01-28T05:04:14Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:44:08.177015Z"}],"nvd":[{"id":"CVE-2011-4531","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.","status":"published","published":"2012-01-08T20:55:01.28Z","modified":"2026-06-16T23:35:00Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:11.800512Z"}]}}