{"id":"CVE-2023-3596","aliases":["EUVD-2023-44246","GHSA-xvq9-c88q-jf5x"],"status":"published","title":"Rockwell Automation Allen-Bradley ControlLogix Communication Modules vulnerable to Denial of Service","description":"Where this vulnerability exists in the Rockwell Automation 1756-EN4* Ethernet/IP communication products, it could allow a malicious user to cause a denial of service by asserting the target system through maliciously crafted CIP messages.","severity":{"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":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.03705,"percentile":0.89824,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2023-07-12T12:51:19Z","modified":"2026-06-17T06:14:25Z","products":[{"vendor":"rockwell automation","product":"1756-en4tr series a"},{"vendor":"rockwell automation","product":"1756-en4trk series a"},{"vendor":"rockwell automation","product":"1756-en4trxt series a"},{"vendor":"rockwellautomation","product":"1756-en4tr"},{"vendor":"rockwellautomation","product":"1756-en4tr_firmware"},{"vendor":"rockwellautomation","product":"1756-en4trk"},{"vendor":"rockwellautomation","product":"1756-en4trk_firmware"},{"vendor":"rockwellautomation","product":"1756-en4trxt"},{"vendor":"rockwellautomation","product":"1756-en4trxt_firmware"}],"references":[{"url":"https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1140010","tags":["x_transferred","Permissions Required","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-3596"},{"url":"https://github.com/advisories/GHSA-xvq9-c88q-jf5x"}],"sources":{"cve":[{"id":"CVE-2023-3596","title":"Rockwell Automation Allen-Bradley ControlLogix Communication Modules vulnerable to Denial of Service ","description":"\nWhere this vulnerability exists in the Rockwell Automation 1756-EN4* Ethernet/IP communication products, it could allow a malicious user to cause a denial of service by asserting the target system through maliciously crafted CIP messages.\n\n","status":"published","published":"2023-07-12T12:51:19.498Z","modified":"2024-11-07T16:59:33.267Z","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":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:35:24.707957Z"}],"euvd":[{"id":"EUVD-2023-44246","description":"\nWhere this vulnerability exists in the Rockwell Automation 1756-EN4* Ethernet/IP communication products, it could allow a malicious user to cause a denial of service by asserting the target system through maliciously crafted CIP messages.\n\n","status":"published","published":"2023-07-12T12:51:19Z","modified":"2024-11-07T16:59:33Z","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":"2026-11-03T00:05:08.272544Z"}],"ghsa":[{"id":"GHSA-xvq9-c88q-jf5x","title":"\nWhere this vulnerability exists in the Rockwell Automation 1756-EN4* Ethernet/IP communication...","description":"\nWhere this vulnerability exists in the Rockwell Automation 1756-EN4* Ethernet/IP communication products, it could allow a malicious user to cause a denial of service by asserting the target system through maliciously crafted CIP messages.\n\n","status":"published","published":"2023-07-12T15:30:52Z","modified":"2024-04-04T06:04:19Z","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"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:56:38.758376Z"}],"nvd":[{"id":"CVE-2023-3596","description":"\nWhere this vulnerability exists in the Rockwell Automation 1756-EN4* Ethernet/IP communication products, it could allow a malicious user to cause a denial of service by asserting the target system through maliciously crafted CIP messages.\n\n","status":"published","published":"2023-07-12T13:15:09.947Z","modified":"2026-06-17T06:14:25.773Z","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":"secondary"},{"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":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:08:15.91037Z"}]}}