{"id":"CVE-2021-20123","aliases":["EUVD-2021-7580","GHSA-gc9m-33cp-rmpj"],"status":"published","title":"A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download...","description":"A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.90332,"percentile":0.998,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":false,"fix_available":false},"cwes":["CWE-22","CWE-668"],"published":"2021-10-13T15:47:58Z","modified":"2026-06-17T03:33:18Z","kev":{"date_added":"2024-09-03","due_date":"2024-09-24","required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2024-09-03"},{"source":"kev","since":"2024-09-03"}],"exploits":[{"source":"nuclei","id":"CVE-2021-20123","title":"Draytek VigorConnect 1.6.0-B - Local File Inclusion","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20123.yaml"}],"products":[{"vendor":"draytek","product":"vigorconnect"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2021-42","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20123","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20123"},{"url":"https://github.com/advisories/GHSA-gc9m-33cp-rmpj"}],"sources":{"cve":[{"id":"CVE-2021-20123","description":"A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the DownloadFileServlet endpoint. 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An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.","status":"published","published":"2022-05-24T19:17:24Z","modified":"2025-10-22T00:32:26Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-22","CWE-668"],"updated_at":"2026-11-02T15:04:05.344883Z"}],"kev":[{"id":"CVE-2021-20123","title":"Draytek VigorConnect Path Traversal Vulnerability ","description":"Draytek VigorConnect contains a path traversal vulnerability in the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges. ","cwes":["CWE-22"],"kev":{"date_added":"2024-09-03","due_date":"2024-09-24","required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:16.234141Z"}],"nvd":[{"id":"CVE-2021-20123","description":"A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the DownloadFileServlet endpoint. 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