{"id":"CVE-2018-14821","aliases":["EUVD-2018-6705","GHSA-g2xj-449r-g2rx"],"status":"published","title":"Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a...","description":"Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally send a malformed CIP packet to Port 44818, causing the RSLinx Classic application to terminate. The user will need to manually restart the software to regain functionality.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.04495,"percentile":0.91559,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-122"],"published":"2018-09-20T19:29:00.47Z","modified":"2026-06-17T01:41:42Z","products":[{"vendor":"rockwell automation","product":"rslinx classic"},{"vendor":"rockwellautomation","product":"rslinx"}],"references":[{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-263-02","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://www.tenable.com/security/research/tra-2018-26","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-14821"},{"url":"https://github.com/advisories/GHSA-g2xj-449r-g2rx"}],"sources":{"cve":[{"id":"CVE-2018-14821","description":"Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally send a malformed CIP packet to Port 44818, causing the RSLinx Classic application to terminate. The user will need to manually restart the software to regain functionality.","status":"published","published":"2018-09-20T20:00:00Z","modified":"2024-09-17T00:35:32.767Z","cwes":["CWE-122"],"updated_at":"2026-11-02T14:35:00.948726Z"}],"euvd":[{"id":"EUVD-2018-6705","description":"Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally send a malformed CIP packet to Port 44818, causing the RSLinx Classic application to terminate. The user will need to manually restart the software to regain functionality.","status":"published","published":"2018-09-20T20:00:00Z","modified":"2024-09-17T00:35:32Z","updated_at":"2026-11-03T00:28:57.917597Z"}],"ghsa":[{"id":"GHSA-g2xj-449r-g2rx","title":"Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a...","description":"Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally send a malformed CIP packet to Port 44818, causing the RSLinx Classic application to terminate. The user will need to manually restart the software to regain functionality.","status":"published","published":"2022-05-13T01:34:25Z","modified":"2023-02-01T05:08:28Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:50:46.771353Z"}],"nvd":[{"id":"CVE-2018-14821","description":"Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally send a malformed CIP packet to Port 44818, causing the RSLinx Classic application to terminate. The user will need to manually restart the software to regain functionality.","status":"published","published":"2018-09-20T19:29:00.47Z","modified":"2026-06-17T01:41:42.527Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-122","CWE-119"],"updated_at":"2026-11-02T14:04:40.661264Z"}]}}