{"schemaVersion":3,"id":"CVE-2024-21899","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.1.3.2578 build 20231110 and later\nQTS 4.5.4.2627 build 20231225 and later\nQuTS hero h5.1.3.2578 build 20231110 and later\nQuTS hero h4.5.4.2626 build 20231225 and later\nQuTScloud c5.1.5.2651 and later","dates":{"published":"2024-03-08T16:17:25.243Z","modified":"2024-08-01T22:35:34.557Z","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}]},"epss":{"probability":0.24365,"percentile":0.97856,"severity":"high","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.24365},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.24365,"percentile":0.97856}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.24365,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.24365,"percentile":0.97856}]},"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-287","name":"Improper Authentication","description":"When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/287.html"}],"affected":[{"vendor":"qnap systems inc.","product":"qts","name":"QTS","label":"qts","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 5.1.x, < 5.1.3.2578 build 20231110","noFixRecorded":false,"fixedIn":null},{"text":"≥ 4.5.x, < 4.5.4.2627 build 20231225","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.1.x, < 5.1.3.2578 build 20231110 | ≥ 4.5.x, < 4.5.4.2627 build 20231225","eol":null,"hubHref":"/vendor/qnap_systems_inc/qts"},{"vendor":"qnap systems inc.","product":"quts hero","name":"QuTS hero","label":"quts hero","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ h5.1.x, < h5.1.3.2578 build 20231110","noFixRecorded":false,"fixedIn":null},{"text":"≥ h4.5.x, < h4.5.4.2626 build 20231225","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ h5.1.x, < h5.1.3.2578 build 20231110 | ≥ h4.5.x, < h4.5.4.2626 build 20231225","eol":null,"hubHref":"/vendor/qnap_systems_inc/quts_hero"},{"vendor":"qnap systems inc.","product":"qutscloud","name":"QuTScloud","label":"qutscloud","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ c5.x.x, < c5.1.5.2651","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ c5.x.x, < c5.1.5.2651","eol":null,"hubHref":"/vendor/qnap_systems_inc/qutscloud"},{"vendor":"qnap","product":"qts","name":"QTS","label":"qts","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.5.4.2627","noFixRecorded":false,"fixedIn":null},{"text":"≥ 5.1.0, < 5.1.3.2578","noFixRecorded":false,"fixedIn":null},{"text":"4.5.4.2627","noFixRecorded":false,"fixedIn":null},{"text":"5.1.3.2578","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.5.4.2627 | ≥ 5.1.0, < 5.1.3.2578 | 4.5.4.2627 | 5.1.3.2578","eol":null,"hubHref":"/vendor/qnap/qts"},{"vendor":"qnap","product":"quts_hero","name":"quts hero","label":"quts_hero","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< h4.5.4.2626","noFixRecorded":false,"fixedIn":null},{"text":"≥ h5.1.0, < h5.1.3.2578","noFixRecorded":false,"fixedIn":null},{"text":"h4.5.4.2626","noFixRecorded":false,"fixedIn":null},{"text":"h5.1.3.2578","noFixRecorded":false,"fixedIn":null}],"versionsText":"< h4.5.4.2626 | ≥ h5.1.0, < h5.1.3.2578 | h4.5.4.2626 | h5.1.3.2578","eol":null,"hubHref":"/vendor/qnap/quts_hero"},{"vendor":"qnap","product":"qutscloud","name":"qutscloud","label":"qutscloud","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< c5.1.5.2651","noFixRecorded":false,"fixedIn":null}],"versionsText":"< c5.1.5.2651","eol":null,"hubHref":"/vendor/qnap/qutscloud"}],"affectedCount":6,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.qnap.com/en/security-advisory/qsa-24-09","label":"www.qnap.com/en/security-advisory/qsa-24-09","hostname":"www.qnap.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2024-03-08T16:17:25.243Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-01T22:35:34.557Z","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":"2026-10-21T03:23:40.160Z","stale":false,"partial":false}}