{"id":"CVE-2018-17924","aliases":["EUVD-2018-9665","GHSA-w6vr-5wrp-c9p7"],"status":"published","title":"Rockwell Automation MicroLogix 1400 Controllers and 1756 ControlLogix Communications Modules An...","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.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.05845,"percentile":0.93226,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2018-12-07T14:00:00Z","modified":"2026-06-17T01:46:32Z","products":[{"vendor":"rockwellautomation","product":"1756-en2f_series_a_firmware"},{"vendor":"rockwellautomation","product":"1756-en2f_series_b_firmware"},{"vendor":"rockwellautomation","product":"1756-en2f_series_c_firmware"},{"vendor":"rockwellautomation","product":"1756-en2t_series_a_firmware"},{"vendor":"rockwellautomation","product":"1756-en2t_series_b_firmware"},{"vendor":"rockwellautomation","product":"1756-en2t_series_c_firmware"},{"vendor":"rockwellautomation","product":"1756-en2t_series_d_firmware"},{"vendor":"rockwellautomation","product":"1756-en2tr_series_a_firmware"},{"vendor":"rockwellautomation","product":"1756-en2tr_series_b_firmware"},{"vendor":"rockwellautomation","product":"1756-en2tr_series_c_firmware"},{"vendor":"rockwellautomation","product":"1756-en3tr_series_a_firmware"},{"vendor":"rockwellautomation","product":"1756-en3tr_series_b_firmware"},{"vendor":"rockwellautomation","product":"1756-enbt_firmware"},{"vendor":"rockwellautomation","product":"1756-eweb_series_a_firmware"},{"vendor":"rockwellautomation","product":"1756-eweb_series_b_firmware"},{"vendor":"rockwellautomation","product":"micrologix_1400_firmware"}],"references":[{"url":"http://www.securityfocus.com/bid/106132","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-310-02","tags":["x_refsource_MISC","x_transferred","Mitigation","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-17924"},{"url":"https://github.com/advisories/GHSA-w6vr-5wrp-c9p7"}],"sources":{"cve":[{"id":"CVE-2018-17924","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.","status":"published","published":"2018-12-07T14:00:00Z","modified":"2026-06-03T13:43:39.921Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:35:07.672841Z"}],"euvd":[{"id":"EUVD-2018-9665","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.","status":"published","published":"2018-12-07T14:00:00Z","modified":"2026-06-03T13:43:39Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:54.727632Z"}],"ghsa":[{"id":"GHSA-w6vr-5wrp-c9p7","title":"Rockwell Automation MicroLogix 1400 Controllers and 1756 ControlLogix Communications Modules An...","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.","status":"published","published":"2022-05-03T00:01:27Z","modified":"2023-02-01T05:00:53Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:49:37.291211Z"}],"nvd":[{"id":"CVE-2018-17924","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.","status":"published","published":"2018-12-07T14:29:00.663Z","modified":"2026-06-17T01:46:32.423Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:04:49.995593Z"}]}}