{"api_version":"1","generated_at":"2026-07-23T13:38:31+00:00","cve":"CVE-2021-41566","urls":{"html":"https://cve.report/CVE-2021-41566","api":"https://cve.report/api/cve/CVE-2021-41566.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-41566","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-41566"},"summary":{"title":"CVE-2021-41566","description":"The file extension of the TadTools file upload function fails to filter, thus remote attackers can upload any types of files and execute arbitrary code without logging in.","state":"PUBLIC","assigner":"cve@cert.org.tw","published_at":"2021-10-08 16:15:00","updated_at":"2021-10-15 15:19:00"},"problem_types":["CWE-434"],"metrics":[],"references":[{"url":"https://www.twcert.org.tw/tw/cp-132-5170-83472-1.html","name":"https://www.twcert.org.tw/tw/cp-132-5170-83472-1.html","refsource":"MISC","tags":[],"title":"TWCERT/CC台灣電腦網路危機處理暨協調中心-Tad TadTools - Arbitrary File Upload","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-41566","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41566","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"41566","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"tadtools_project","cpe5":"tadtools","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"AKA":"TWCERT/CC","ASSIGNER":"cve@cert.org.tw","DATE_PUBLIC":"2021-10-08T14:53:00.000Z","ID":"CVE-2021-41566","STATE":"PUBLIC","TITLE":"Tad TadTools - Arbitrary File Upload"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"TadTools","version":{"version_data":[{"version_affected":"<=","version_name":"0","version_value":"3.2.1"}]}}]},"vendor_name":"Tad"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"The file extension of the TadTools file upload function fails to filter, thus remote attackers can upload any types of files and execute arbitrary code without logging in."}]},"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-434 Unrestricted Upload of File with Dangerous Type"}]}]},"references":{"reference_data":[{"refsource":"MISC","url":"https://www.twcert.org.tw/tw/cp-132-5170-83472-1.html","name":"https://www.twcert.org.tw/tw/cp-132-5170-83472-1.html"}]},"solution":[{"lang":"eng","value":"Update TadTools version to 3.2.2"}],"source":{"advisory":"TVN-202109031","discovery":"EXTERNAL"}},"nvd":{"publishedDate":"2021-10-08 16:15:00","lastModifiedDate":"2021-10-15 15:19:00","problem_types":["CWE-434"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:tadtools_project:tadtools:*:*:*:*:*:*:*:*","versionEndExcluding":"3.2.2","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"41566","Ordinal":"217365","Title":"CVE-2021-41566","CVE":"CVE-2021-41566","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"41566","Ordinal":"1","NoteData":"The file extension of the TadTools file upload function fails to filter, thus remote attackers can upload any types of files and execute arbitrary code without logging in.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"41566","Ordinal":"2","NoteData":"2021-10-08","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"41566","Ordinal":"3","NoteData":"2021-10-08","Type":"Other","Title":"Modified"}]}}}