{"cve_id":"CVE-2020-8515","published":"2020-02-01T13:15:12.623000+00:00","last_modified":"2026-06-17T03:26:30.047000+00:00","vuln_status":"Analyzed","description":"DrayTek Vigor2960 1.3.1_Beta, Vigor3900 1.4.4_Beta, and Vigor300B 1.3.3_Beta, 1.4.2.1_Beta, and 1.4.4_Beta devices allow remote code execution as root (without authentication) via shell metacharacters to the cgi-bin/mainfunction.cgi URI. This issue has been fixed in Vigor3900/2960/300B v1.5.1.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","base_score":9.8,"base_severity":"CRITICAL","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-78"],"in_kev":true,"kev_date_added":"2021-11-03","kev_ransomware":false,"epss_score":0.99993,"epss_percentile":0.99987,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T09:10:50.215844+00:00","first_seen":"2020-02-01T13:15:12.623000+00:00","kev_first_seen":"2021-11-03T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["draytek"],"products":["vigor2960","vigor2960_firmware","vigor300b","vigor300b_firmware","vigor3900","vigor3900_firmware"],"affected":[{"vendor":"draytek","product":"vigor2960_firmware","ranges":["1.3.1"]},{"vendor":"draytek","product":"vigor300b_firmware","ranges":["1.4.4","1.3.3","1.4.2.1"]},{"vendor":"draytek","product":"vigor3900_firmware","ranges":["1.4.4"]}]}