{"schemaVersion":3,"id":"CVE-2021-44971","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Multiple Tenda devices are affected by authentication bypass, such as AC15V1.0 Firmware V15.03.05.20_multi?AC5V1.0 Firmware V15.03.06.48_multi and so on. an attacker can obtain sensitive information, and even combine it with authenticated command injection to implement RCE.","dates":{"published":"2022-01-28T18:17:04.000Z","modified":"2026-07-09T00:15:59.279Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"NVD","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":"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":7.5,"severity":"high","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.021,"percentile":0.81534,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.021},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.021,"percentile":0.81534}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.021,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.021,"percentile":0.81534}]},"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-697","name":"Incorrect Comparison","description":"The product compares two entities in a security-relevant context, but the comparison is incorrect.","type":"weakness","status":"Incomplete","abstraction":"Pillar","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/697.html"}],"affected":[{"vendor":"tenda","product":"ac15_firmware","name":"ac15 firmware","label":"ac15_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"15.03.05.20_multi","noFixRecorded":false,"fixedIn":null}],"versionsText":"15.03.05.20_multi","eol":null,"hubHref":"/vendor/tenda/ac15"},{"vendor":"tenda","product":"ac5_firmware","name":"ac5 firmware","label":"ac5_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"15.03.06.48_multi","noFixRecorded":false,"fixedIn":null}],"versionsText":"15.03.06.48_multi","eol":null,"hubHref":"/vendor/tenda/ac5"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/21Gun5/my_cve/blob/main/tenda/bypass_auth.md","label":"github.com/21Gun5/my_cve/blob/main/tenda/bypass_auth.md","hostname":"github.com","tags":["Broken Link"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2022-01-28T18:17:04.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-09T00:15:59.279Z","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":"2026-10-22T13:43:15.504Z","stale":false,"partial":false}}