{"schemaVersion":3,"id":"CVE-2020-15798","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V16 Update 3a), SIMATIC HMI KTP Mobile Panels (All versions < V16 Update 3a), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). Affected devices with enabled telnet service do not require authentication for this service. This could allow a remote attacker to gain full access to the device. (ZDI-CAN-12046)","dates":{"published":"2021-02-09T15:38:17.000Z","modified":"2026-06-02T18:59:33.656Z","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":9.3,"severity":"high","vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.05218,"percentile":0.92421,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.05218},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.05218,"percentile":0.92421}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.05218,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.05218,"percentile":0.92421}]},"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-306","name":"Missing Authentication for Critical Function","description":"The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/306.html"}],"affected":[{"vendor":"siemens","product":"simatic_hmi_comfort_panels_firmware","name":"simatic hmi comfort panels firmware","label":"simatic_hmi_comfort_panels_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 16.0","noFixRecorded":false,"fixedIn":null},{"text":"16.0","noFixRecorded":false,"fixedIn":null},{"text":"16.0:update1","noFixRecorded":false,"fixedIn":null},{"text":"16.0:update2","noFixRecorded":false,"fixedIn":null},{"text":"16.0:update3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 16.0 | 16.0 | 16.0:update1 | 16.0:update2 | 16.0:update3","eol":null,"hubHref":"/vendor/siemens/simatic_hmi_comfort_panels"},{"vendor":"siemens","product":"simatic hmi comfort panels (incl. siplus variants)","name":"SIMATIC HMI Comfort Panels (incl. SIPLUS variants)","label":"simatic hmi comfort panels (incl. siplus variants)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"All versions < V16 Update 3a","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions < V16 Update 3a","eol":null,"hubHref":"/vendor/siemens/simatic_hmi_comfort_panels_incl_siplus_variants"},{"vendor":"siemens","product":"simatic_hmi_ktp_mobile_panels_firmware","name":"simatic hmi ktp mobile panels firmware","label":"simatic_hmi_ktp_mobile_panels_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"All versions < V16 Update 3a","noFixRecorded":false,"fixedIn":null},{"text":"< 16.0","noFixRecorded":false,"fixedIn":null},{"text":"16.0","noFixRecorded":false,"fixedIn":null},{"text":"16.0:update1","noFixRecorded":false,"fixedIn":null},{"text":"16.0:update2","noFixRecorded":false,"fixedIn":null},{"text":"16.0:update3","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions < V16 Update 3a | < 16.0 | 16.0 | 16.0:update1 | 16.0:update2 | 16.0:update3","eol":null,"hubHref":"/vendor/siemens/simatic_hmi_ktp_mobile_panels"},{"vendor":"siemens","product":"sinamics_gh150_firmware","name":"sinamics gh150 firmware","label":"sinamics_gh150_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | na","eol":null,"hubHref":"/vendor/siemens/sinamics_gh150"},{"vendor":"siemens","product":"sinamics_gl150_firmware","name":"sinamics gl150 firmware","label":"sinamics_gl150_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/siemens/sinamics_gl150"},{"vendor":"siemens","product":"sinamics gl150 (with option x30)","name":"SINAMICS GL150 (with option X30)","label":"sinamics gl150 (with option x30)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":"/vendor/siemens/sinamics_gl150_with_option_x30"},{"vendor":"siemens","product":"sinamics_gm150_firmware","name":"sinamics gm150 firmware","label":"sinamics_gm150_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"na","eol":null,"hubHref":"/vendor/siemens/sinamics_gm150"},{"vendor":"siemens","product":"sinamics gm150 (with option x30)","name":"SINAMICS GM150 (with option X30)","label":"sinamics gm150 (with option x30)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":"/vendor/siemens/sinamics_gm150_with_option_x30"},{"vendor":"siemens","product":"sinamics_sh150_firmware","name":"sinamics sh150 firmware","label":"sinamics_sh150_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | na","eol":null,"hubHref":"/vendor/siemens/sinamics_sh150"},{"vendor":"siemens","product":"sinamics_sl150_firmware","name":"sinamics sl150 firmware","label":"sinamics_sl150_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | na","eol":null,"hubHref":"/vendor/siemens/sinamics_sl150"},{"vendor":"siemens","product":"sinamics_sm120_firmware","name":"sinamics sm120 firmware","label":"sinamics_sm120_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | na","eol":null,"hubHref":"/vendor/siemens/sinamics_sm120"},{"vendor":"siemens","product":"sinamics_sm150_firmware","name":"sinamics sm150 firmware","label":"sinamics_sm150_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | na","eol":null,"hubHref":"/vendor/siemens/sinamics_sm150"},{"vendor":"siemens","product":"sinamics_sm150i_firmware","name":"sinamics sm150i firmware","label":"sinamics_sm150i_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | na","eol":null,"hubHref":"/vendor/siemens/sinamics_sm150i"}],"affectedCount":13,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-520004.pdf","label":"cert-portal.siemens.com/productcert/pdf/ssa-520004.pdf","hostname":"cert-portal.siemens.com","tags":["X Refsource MISC","Vendor Advisory"]},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-033-02","label":"us-cert.cisa.gov/ics/advisories/icsa-21-033-02","hostname":"us-cert.cisa.gov","tags":["X Refsource MISC","Third Party Advisory","US Government Resource"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-752103.pdf","label":"cert-portal.siemens.com/productcert/pdf/ssa-752103.pdf","hostname":"cert-portal.siemens.com","tags":["X Refsource CONFIRM","Patch","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-02-09T15:38:17.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-02T18:59:33.656Z","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":"2026-10-19T23:50:04.488Z","stale":false,"partial":false}}