{"id":"CVE-2018-5400","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-5400","generatedAt":"2026-10-28T19:04:34.804Z","title":"Following this exchange the devices allow Modbus transmissions between the two devices on the standard Modbus port 502 TCP.","description":"The Auto-Maskin products utilize an undocumented custom protocol to set up Modbus communications with other devices without validating those devices. The originating device sends a message in plaintext, 48:65:6c:6c:6f:20:57:6f:72:6c:64, \"Hello World\" over UDP ports 44444-44446 to the broadcast address for the LAN. Without verification devices respond to any of these broadcast messages on the LAN with a plaintext reply over UDP containing the device model and firmware version. Following this exchange the devices allow Modbus transmissions between the two devices on the standard Modbus port 502 TCP. Impact: An attacker can exploit this vulnerability to send arbitrary messages to any DCU or RP device through spoofing or replay attacks as long as they have access to the network. Affected releases are Auto-Maskin DCU-210E RP-210E: Versions prior to 3.7 on ARMv7.","published":"2018-10-08T15:29:03.000Z","lastModified":"2026-06-17T02:00:16.000Z","status":"Modified","sourceIdentifier":"cret@cert.org","cvss":{"version":"3.0","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-346"],"affected":["auto-maskin/rp 210e firmware","auto-maskin/dcu 210e firmware"],"epss":{"score":0.00742,"percentile":0.54486,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.kb.cert.org/vuls/id/176301","tags":["Third Party Advisory","US Government Resource"],"source":"cret@cert.org"},{"url":"https://www.us-cert.gov/ics/advisories/icsa-20-051-04","source":"cret@cert.org"},{"url":"https://www.kb.cert.org/vuls/id/176301","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.us-cert.gov/ics/advisories/icsa-20-051-04","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-5400","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}