{"schemaVersion":3,"id":"CVE-2020-28395","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability has been identified in SCALANCE X-200RNA switch family (All versions < V3.2.7), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.0). Devices do not create a new unique private key after factory reset. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.","dates":{"published":"2021-01-12T00:00:00.000Z","modified":"2024-08-04T16:33:59.028Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.9,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/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":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0119,"percentile":0.6747,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0.014000000000000123,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.01176},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0119,"percentile":0.6747}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01176,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0119,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0119,"percentile":0.6747}]},"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-321","name":"Use of Hard-coded Cryptographic Key","description":"The product uses a hard-coded, unchangeable cryptographic key.","type":"weakness","status":"Draft","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/321.html"},{"id":"CWE-798","name":"Use of Hard-coded Credentials","description":"The product contains hard-coded credentials, such as a password or cryptographic key.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/798.html"}],"affected":[{"vendor":"siemens","product":"scalance x-200rna switch family","name":"SCALANCE X-200RNA switch family","label":"scalance x-200rna switch family","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"All versions < V3.2.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions < V3.2.7","eol":null,"hubHref":"/vendor/siemens/scalance_x-200rna_switch_family"},{"vendor":"siemens","product":"scalance x-300 switch family (incl. x408 and siplus net variants)","name":"SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)","label":"scalance x-300 switch family (incl. x408 and siplus net variants)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"All versions < V4.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions < V4.1.0","eol":null,"hubHref":"/vendor/siemens/scalance_x-300_switch_family_incl_x408_and_siplus_net_variants"},{"vendor":"siemens","product":"scalance_xr324-12m_firmware","name":"scalance xr324-12m firmware","label":"scalance_xr324-12m_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.0","eol":null,"hubHref":"/vendor/siemens/scalance_xr324-12m"},{"vendor":"siemens","product":"scalance_xr324-12m_ts_firmware","name":"scalance xr324-12m ts firmware","label":"scalance_xr324-12m_ts_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.0","eol":null,"hubHref":"/vendor/siemens/scalance_xr324-12m_ts"},{"vendor":"siemens","product":"scalance_xr324-4m_eec_firmware","name":"scalance xr324-4m eec firmware","label":"scalance_xr324-4m_eec_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.0","eol":null,"hubHref":"/vendor/siemens/scalance_xr324-4m_eec"},{"vendor":"siemens","product":"scalance_xr324-4m_poe_firmware","name":"scalance xr324-4m poe firmware","label":"scalance_xr324-4m_poe_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.0","eol":null,"hubHref":"/vendor/siemens/scalance_xr324-4m_poe"},{"vendor":"siemens","product":"scalance_xr324-4m_poe_ts_firmware","name":"scalance xr324-4m poe ts firmware","label":"scalance_xr324-4m_poe_ts_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.0","eol":null,"hubHref":"/vendor/siemens/scalance_xr324-4m_poe_ts"},{"vendor":"siemens","product":"scalance_xr324wg_firmware","name":"scalance xr324wg firmware","label":"scalance_xr324wg_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.0","eol":null,"hubHref":"/vendor/siemens/scalance_xr324wg"},{"vendor":"siemens","product":"scalance_xr326-2c_poe_wg_firmware","name":"scalance xr326-2c poe wg firmware","label":"scalance_xr326-2c_poe_wg_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.0","eol":null,"hubHref":"/vendor/siemens/scalance_xr326-2c_poe_wg"},{"vendor":"siemens","product":"scalance_xr328-4c_wg_firmware","name":"scalance xr328-4c wg firmware","label":"scalance_xr328-4c_wg_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.0","eol":null,"hubHref":"/vendor/siemens/scalance_xr328-4c_wg"}],"affectedCount":10,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf","label":"cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf","hostname":"cert-portal.siemens.com","tags":["Vendor Advisory"]},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02","label":"us-cert.cisa.gov/ics/advisories/icsa-21-012-02","hostname":"us-cert.cisa.gov","tags":["Third Party Advisory","US Government Resource","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-01-12T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T16:33:59.028Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":24,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T08:57:53.187Z","stale":false,"partial":false}}