{"schemaVersion":3,"id":"CVE-2020-24683","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The affected versions of S+ Operations (version 2.1 SP1 and earlier) used an approach for user authentication which relies on validation at the client node (client-side authentication). This is not as secure as having the server validate a client application before allowing a connection. Therefore, if the network communication or endpoints for these applications are not protected, unauthorized actors can bypass authentication and make unauthorized connections to the server application.","dates":{"published":"2020-12-22T21:19:10.709Z","modified":"2024-09-17T01:36:41.524Z","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":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":"2.0","versionLabel":"v2.0","source":"NVD","score":7.5,"severity":"high","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01479,"percentile":0.73664,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.01479},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01461,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01461,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01479,"percentile":0.73664}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01479,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01479,"percentile":0.73664}]},"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-305","name":"Authentication Bypass by Primary Weakness","description":"The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/305.html"},{"id":"CWE-602","name":"Client-Side Enforcement of Server-Side Security","description":"The product is composed of a server that relies on the client to implement a mechanism that is intended to protect the server.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/602.html"},{"id":"CWE-669","name":"Incorrect Resource Transfer Between Spheres","description":"The product does not properly transfer a resource/behavior to another sphere, or improperly imports a resource/behavior from another sphere, in a manner that provides unintended control over that resource.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/669.html"}],"affected":[{"vendor":"abb","product":"abb ability™ symphony® plus operations","name":"ABB Ability™ Symphony® Plus Operations","label":"abb ability™ symphony® plus operations","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 2.1 SP1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 2.1 SP1","eol":null,"hubHref":"/vendor/abb/abb_abilityTM_symphony_plus_operations"},{"vendor":"abb","product":"symphony_\\+_historian","name":"symphony \\+ historian","label":"symphony_\\+_historian","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"3.0","noFixRecorded":false,"fixedIn":null},{"text":"3.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"3.0 | 3.1","eol":null,"hubHref":"/vendor/abb/symphony__historian"},{"vendor":"abb","product":"symphony_\\+_operations","name":"symphony \\+ operations","label":"symphony_\\+_operations","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"1.1","noFixRecorded":false,"fixedIn":null},{"text":"2.0","noFixRecorded":false,"fixedIn":null},{"text":"2.1:sp1","noFixRecorded":false,"fixedIn":null},{"text":"2.1:sp2","noFixRecorded":false,"fixedIn":null},{"text":"3.0","noFixRecorded":false,"fixedIn":null},{"text":"3.1","noFixRecorded":false,"fixedIn":null},{"text":"3.2","noFixRecorded":false,"fixedIn":null},{"text":"3.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.1 | 2.0 | 2.1:sp1 | 2.1:sp2 | 3.0 | 3.1 | 3.2 | 3.3","eol":null,"hubHref":"/vendor/abb/symphony__operations"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://search.abb.com/library/Download.aspx?DocumentID=2PAA123980&LanguageCode=en&DocumentPartId=&Action=Launch","label":"search.abb.com/library/…","hostname":"search.abb.com","tags":["X Refsource MISC","Mitigation","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-12-22T21:19:10.709Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-17T01:36:41.524Z","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":"2026-10-21T20:08:23.468Z","stale":false,"partial":false}}