{"schemaVersion":3,"id":"CVE-2021-36190","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A unintended proxy or intermediary ('confused deputy') in Fortinet FortiWeb version 6.4.1 and below, 6.3.15 and below allows an unauthenticated attacker to access protected hosts via crafted HTTP requests.","dates":{"published":"2021-12-08T13:11:05.000Z","modified":"2024-10-25T13:39:43.483Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":6.5,"severity":"medium","vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00833,"percentile":0.56972,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.02599999999999998,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00807},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00833,"percentile":0.56972}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00807,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00833,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00833,"percentile":0.56972}]},"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":[],"affected":[{"vendor":"fortinet","product":"fortinet fortiweb","name":"Fortinet FortiWeb","label":"fortinet fortiweb","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"FortiWeb 6.4.1, 6.4.0, 6.3.15, 6.3.14, 6.3.13, 6.3.12, 6.3.11, 6.3.10, 6.3.9, 6.3.8, 6.3.7, 6.3.6, 6.3.5, 6.3.4, 6.3.3, 6.3.2, 6.3.1, 6.3.0, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.1.2, 6.1.1, 6.1.0, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"FortiWeb 6.4.1, 6.4.0, 6.3.15, 6.3.14, 6.3.13, 6.3.12, 6.3.11, 6.3.10, 6.3.9, 6.3.8, 6.3.7, 6.3.6, 6.3.5, 6.3.4, 6.3.3, 6.3.2, 6.3.1, 6.3.0, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.1.2, 6.1.1, 6.1.0, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0","eol":null,"hubHref":"/vendor/fortinet/fortinet_fortiweb"},{"vendor":"fortinet","product":"fortiweb","name":"Fortiweb","label":"fortiweb","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 6.0.0, ≤ 6.0.7","noFixRecorded":false,"fixedIn":null},{"text":"≥ 6.2.0, ≤ 6.2.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 6.3.0, ≤ 6.3.15","noFixRecorded":false,"fixedIn":null},{"text":"6.1.0","noFixRecorded":false,"fixedIn":null},{"text":"6.1.1","noFixRecorded":false,"fixedIn":null},{"text":"6.1.2","noFixRecorded":false,"fixedIn":null},{"text":"6.4.0","noFixRecorded":false,"fixedIn":null},{"text":"6.4.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 6.0.0, ≤ 6.0.7 | ≥ 6.2.0, ≤ 6.2.6 | ≥ 6.3.0, ≤ 6.3.15 | 6.1.0 | 6.1.1 | 6.1.2 | 6.4.0 | 6.4.1","eol":null,"hubHref":"/vendor/fortinet/fortiweb"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://fortiguard.com/advisory/FG-IR-21-123","label":"fortiguard.com/advisory/FG-IR-21-123","hostname":"fortiguard.com","tags":["X Refsource CONFIRM","Patch","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-12-08T13:11:05.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-10-25T13:39:43.483Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T14:30:56.470Z","stale":false,"partial":false}}