{"id":"CVE-2011-5009","aliases":["EUVD-2011-4914","GHSA-8jmv-f4p4-24wg"],"status":"published","title":"The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote...","description":"The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.","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":"2026-11-07","score":0.10395,"percentile":0.95758,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2011-12-25T01:00:00Z","modified":"2026-06-16T23:35:46Z","exploits":[{"source":"exploitdb","id":"EDB-36377","title":"CoDeSys 3.4 - POST Null Pointer Content-Length Parsing Remote Denial of Service","type":"dos","platform":"multiple","date":"2011-11-30","verified":true,"url":"https://www.exploit-db.com/exploits/36377"},{"source":"exploitdb","id":"EDB-36378","title":"CoDeSys 3.4 - Null Pointer Invalid HTTP Request Parsing Remote Denial of Service","type":"dos","platform":"multiple","date":"2011-11-30","verified":true,"url":"https://www.exploit-db.com/exploits/36378"}],"products":[{"vendor":"3ssoftware","product":"codesys"}],"references":[{"url":"http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-336-01A.pdf","tags":["x_refsource_MISC","x_transferred","Exploit","US Government Resource"]},{"url":"http://seclists.org/bugtraq/2011/Nov/178","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://secunia.com/advisories/47018","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://aluigi.altervista.org/adv/codesys_1-adv.txt","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.osvdb.org/77388","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/71533","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.osvdb.org/77389","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-5009"},{"url":"https://github.com/advisories/GHSA-8jmv-f4p4-24wg"}],"sources":{"cve":[{"id":"CVE-2011-5009","description":"The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.","status":"published","published":"2011-12-25T01:00:00Z","modified":"2024-08-07T00:23:39.735Z","updated_at":"2026-11-02T14:35:36.252742Z"}],"euvd":[{"id":"EUVD-2011-4914","description":"The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.","status":"published","published":"2011-12-25T01:00:00Z","modified":"2024-08-07T00:23:39Z","updated_at":"2026-11-03T01:39:47.649601Z"}],"ghsa":[{"id":"GHSA-8jmv-f4p4-24wg","title":"The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote...","description":"The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.","status":"published","published":"2022-05-17T01:51:15Z","modified":"2023-02-03T05:05:49Z","updated_at":"2026-11-02T14:53:48.348375Z"}],"nvd":[{"id":"CVE-2011-5009","description":"The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.","status":"published","published":"2011-12-25T01:55:04.727Z","modified":"2026-06-16T23:35:46.527Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:02:11.800512Z"}]}}