{"schemaVersion":3,"id":"CVE-2020-6984","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500 Software v12.001 and prior, The cryptographic function utilized to protect the password in MicroLogix is discoverable.","dates":{"published":"2020-03-16T15:41:13.000Z","modified":"2026-06-03T13:22:52.674Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.02847,"percentile":0.86515,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.02847},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.02847,"percentile":0.86515}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02847,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.02847,"percentile":0.86515}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-327","name":"Use of a Broken or Risky Cryptographic Algorithm","description":"The product uses a broken or risky cryptographic algorithm or protocol.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/327.html"}],"affected":[{"vendor":"rockwellautomation","product":"micrologix_1400_b_firmware","name":"micrologix 1400 b firmware","label":"micrologix_1400_b_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≤ 21.001","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 21.001","eol":null,"hubHref":"/vendor/rockwellautomation/micrologix_1400_b"},{"vendor":"rockwellautomation","product":"rslogix_500","name":"rslogix 500","label":"rslogix_500","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 12.001","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 12.001","eol":null,"hubHref":"/vendor/rockwellautomation/rslogix_500"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.us-cert.gov/ics/advisories/icsa-20-070-06","label":"www.us-cert.gov/ics/advisories/icsa-20-070-06","hostname":"www.us-cert.gov","tags":["X Refsource MISC","Third Party Advisory","US Government Resource"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-03-16T15:41:13.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-03T13:22:52.674Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T12:40:47.312Z","stale":false,"partial":false}}