{"schemaVersion":3,"id":"CVE-2021-43204","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A improper control of a resource through its lifetime in Fortinet FortiClientWindows version 6.4.1 and 6.4.0, version 6.2.9 and below, version 6.0.10 and below allows attacker to cause a complete denial of service of its components via changes of directory access permissions.","dates":{"published":"2021-12-09T09:04:29.000Z","modified":"2024-10-25T13:37:53.823Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.9,"severity":"medium","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":4.4,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":4.4,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.9,"severity":"medium","vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00356,"percentile":0.27797,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.006999999999999975,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00349},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00356,"percentile":0.27797}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00349,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00356,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00356,"percentile":0.27797}]},"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":"forticlient","name":"forticlient","label":"forticlient","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 5.0.0, ≤ 5.0.11","noFixRecorded":false,"fixedIn":null},{"text":"≥ 5.4.0, ≤ 5.4.5","noFixRecorded":false,"fixedIn":null},{"text":"≥ 5.6.0, ≤ 5.6.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 6.0.0, ≤ 6.0.10","noFixRecorded":false,"fixedIn":null},{"text":"≥ 6.2.0, ≤ 6.2.9","noFixRecorded":false,"fixedIn":null},{"text":"4.0.1","noFixRecorded":false,"fixedIn":null},{"text":"4.0.2","noFixRecorded":false,"fixedIn":null},{"text":"4.0.3","noFixRecorded":false,"fixedIn":null},{"text":"4.0.4","noFixRecorded":false,"fixedIn":null},{"text":"4.1.0","noFixRecorded":false,"fixedIn":null},{"text":"4.1.1","noFixRecorded":false,"fixedIn":null},{"text":"4.1.2","noFixRecorded":false,"fixedIn":null},{"text":"4.1.3","noFixRecorded":false,"fixedIn":null},{"text":"4.2.0","noFixRecorded":false,"fixedIn":null},{"text":"4.2.1","noFixRecorded":false,"fixedIn":null},{"text":"4.2.2","noFixRecorded":false,"fixedIn":null},{"text":"4.2.3","noFixRecorded":false,"fixedIn":null},{"text":"4.2.4","noFixRecorded":false,"fixedIn":null},{"text":"4.2.5","noFixRecorded":false,"fixedIn":null},{"text":"4.2.6","noFixRecorded":false,"fixedIn":null},{"text":"4.2.7","noFixRecorded":false,"fixedIn":null},{"text":"4.3.0","noFixRecorded":false,"fixedIn":null},{"text":"4.3.1","noFixRecorded":false,"fixedIn":null},{"text":"4.3.2","noFixRecorded":false,"fixedIn":null},{"text":"4.3.3","noFixRecorded":false,"fixedIn":null},{"text":"4.3.4","noFixRecorded":false,"fixedIn":null},{"text":"4.3.5","noFixRecorded":false,"fixedIn":null},{"text":"5.2.0","noFixRecorded":false,"fixedIn":null},{"text":"5.2.1","noFixRecorded":false,"fixedIn":null},{"text":"5.2.2","noFixRecorded":false,"fixedIn":null},{"text":"5.2.3","noFixRecorded":false,"fixedIn":null},{"text":"5.2.4","noFixRecorded":false,"fixedIn":null},{"text":"5.2.5","noFixRecorded":false,"fixedIn":null},{"text":"5.2.6","noFixRecorded":false,"fixedIn":null},{"text":"6.4.0","noFixRecorded":false,"fixedIn":null},{"text":"6.4.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.0.0, ≤ 5.0.11 | ≥ 5.4.0, ≤ 5.4.5 | ≥ 5.6.0, ≤ 5.6.6 | ≥ 6.0.0, ≤ 6.0.10 | ≥ 6.2.0, ≤ 6.2.9 | 4.0.1 | 4.0.2 | 4.0.3 | 4.0.4 | 4.1.0 | 4.1.1 | 4.1.2 | 4.1.3 | 4.2.0 | 4.2.1 | 4.2.2 | 4.2.3 | 4.2.4 | 4.2.5 | 4.2.6 | 4.2.7 | 4.3.0 | 4.3.1 | 4.3.2 | 4.3.3 | 4.3.4 | 4.3.5 | 5.2.0 | 5.2.1 | 5.2.2 | 5.2.3 | 5.2.4 | 5.2.5 | 5.2.6 | 6.4.0 | 6.4.1","eol":null,"hubHref":"/vendor/fortinet/forticlient"},{"vendor":"fortinet","product":"fortinet forticlientwindows","name":"Fortinet FortiClientWindows","label":"fortinet forticlientwindows","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"FortiClientWindows 6.4.1, 6.4.0, 6.2.9, 6.2.8, 6.2.7, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.10, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0, 5.6.6, 5.6.5, 5.6.4, 5.6.3, 5.6.2, 5.6.1, 5.6.0, 5.4.5, 5.4.4, 5.4.3, 5.4.2, 5.4.1, 5.4.0, 5.2.6, 5.2.5, 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.0.11, 5.0.10, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.1, 5.0.0, 4.3.5, 4.3.4, 4.3.3, 4.3.2, 4.3.1, 4.3.0, 4.2.7, 4.2.6, 4.2.5, 4.2.4, 4.2.3, 4.2.2, 4.2.1, 4.2.0, 4.1.3, 4.1.2, 4.1.1, 4.1.0, 4.0.4, 4.0.3, 4.0.2, 4.0.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"FortiClientWindows 6.4.1, 6.4.0, 6.2.9, 6.2.8, 6.2.7, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.10, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0, 5.6.6, 5.6.5, 5.6.4, 5.6.3, 5.6.2, 5.6.1, 5.6.0, 5.4.5, 5.4.4, 5.4.3, 5.4.2, 5.4.1, 5.4.0, 5.2.6, 5.2.5, 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.0.11, 5.0.10, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.1, 5.0.0, 4.3.5, 4.3.4, 4.3.3, 4.3.2, 4.3.1, 4.3.0, 4.2.7, 4.2.6, 4.2.5, 4.2.4, 4.2.3, 4.2.2, 4.2.1, 4.2.0, 4.1.3, 4.1.2, 4.1.1, 4.1.0, 4.0.4, 4.0.3, 4.0.2, 4.0.1","eol":null,"hubHref":"/vendor/fortinet/fortinet_forticlientwindows"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://fortiguard.com/advisory/FG-IR-21-167","label":"fortiguard.com/advisory/FG-IR-21-167","hostname":"fortiguard.com","tags":["X Refsource CONFIRM","Patch","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-12-09T09:04:29.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-10-25T13:37:53.823Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":20,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T07:27:18.472Z","stale":false,"partial":false}}