{"id":"CVE-2018-17924","state":"PUBLISHED","title":"Rockwell Automation MicroLogix 1400 Controllers and 1756 ControlLogix Communications Modules An unauthenticated, remote threat actor could send a CIP connection request to an affec","description":"Rockwell Automation MicroLogix 1400 Controllers and 1756 ControlLogix Communications Modules An unauthenticated, remote threat actor could send a CIP connection request to an affected device, and upon successful connection, send a new IP configuration to the affected device even if the controller in the system is set to Hard RUN mode. When the affected device accepts this new IP configuration, a loss of communication occurs between the device and the rest of the system as the system traffic is still attempting to communicate with the device via the overwritten IP address.","publishedAt":"2018-12-07T14:00:00.000Z","updatedAt":"2026-06-03T13:43:39.921Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"icscert","products":["n/a Rockwell Automation"],"affected":[{"vendor":"n/a","product":"Rockwell Automation","versions":[{"version":"MicroLogix 1400 Controllers Series A, all versions, Series B, v21.003 and earlier,Series C, v21.003 and earlier, 1756 ControlLogix EtherNet/IP Communications Modules 1756-ENBT, all versions, 1756-EWEB Series A, all versions Series B, all versions, 1756-EN2F Series A, all versions, Series B, all versions, Series C, v10.10 and earlier, 1756-EN2T, Series A, all versions, Series B, all versions, Series C, all versions, Series D, v10.10 and earlier, 1756-EN2TR, Series A, all versions, Series B, all versions, Series C, v10.10 and earlier, 1756-EN3TR, Series A, all versions, Series B, v10.10 and earlier.","status":"affected"}]}],"references":["http://www.securityfocus.com/bid/106132","https://ics-cert.us-cert.gov/advisories/ICSA-18-310-02"],"weaknesses":["CWE-306"],"ingestedAt":"2026-10-29T19:44:28.183Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2018/17xxx/CVE-2018-17924.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2018-17924","state":"PUBLISHED","datePublished":"2018-12-07T14:00:00.000Z","dateUpdated":"2026-06-03T13:43:39.921Z","assignerShortName":"icscert","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateReserved":"2018-10-02T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Rockwell Automation MicroLogix 1400 Controllers and 1756 ControlLogix Communications Modules An unauthenticated, remote threat actor could send a CIP connection request to an affected device, and upon successful connection, send a new IP configuration to the affected device even if the controller in the system is set to Hard RUN mode. When the affected device accepts this new IP configuration, a loss of communication occurs between the device and the rest of the system as the system traffic is still attempting to communicate with the device via the overwritten IP address."}],"affected":[{"vendor":"n/a","product":"Rockwell Automation","versions":[{"version":"MicroLogix 1400 Controllers Series A, all versions, Series B, v21.003 and earlier,Series C, v21.003 and earlier, 1756 ControlLogix EtherNet/IP Communications Modules 1756-ENBT, all versions, 1756-EWEB Series A, all versions Series B, all versions, 1756-EN2F Series A, all versions, Series B, all versions, Series C, v10.10 and earlier, 1756-EN2T, Series A, all versions, Series B, all versions, Series C, all versions, Series D, v10.10 and earlier, 1756-EN2TR, Series A, all versions, Series B, all versions, Series C, v10.10 and earlier, 1756-EN3TR, Series A, all versions, Series B, v10.10 and earlier.","status":"affected"}]}],"references":[{"url":"http://www.securityfocus.com/bid/106132","name":"106132","tags":["vdb-entry","x_refsource_BID"]},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-310-02","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","description":"MISSING AUTHENTICATION FOR CRITICAL FUNCTION CWE-306","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"icscert","dateUpdated":"2018-12-08T10:57:01.000Z","orgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6"},"datePublic":"2018-12-07T00:00:00.000Z","x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"ics-cert@hq.dhs.gov","ID":"CVE-2018-17924","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Rockwell Automation","version":{"version_data":[{"version_value":"MicroLogix 1400 Controllers Series A, all versions, Series B, v21.003 and earlier,Series C, v21.003 and earlier, 1756 ControlLogix EtherNet/IP Communications Modules 1756-ENBT, all versions, 1756-EWEB Series A, all versions Series B, all versions, 1756-EN2F Series A, all versions, Series B, all versions, Series C, v10.10 and earlier, 1756-EN2T, Series A, all versions, Series B, all versions, Series C, all versions, Series D, v10.10 and earlier, 1756-EN2TR, Series A, all versions, Series B, all versions, Series C, v10.10 and earlier, 1756-EN3TR, Series A, all versions, Series B, v10.10 and earlier."}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Rockwell Automation MicroLogix 1400 Controllers and 1756 ControlLogix Communications Modules An unauthenticated, remote threat actor could send a CIP connection request to an affected device, and upon successful connection, send a new IP configuration to the affected device even if the controller in the system is set to Hard RUN mode. 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