{"cve_id":"CVE-2020-12812","published":"2020-07-24T23:15:12.003000+00:00","last_modified":"2026-10-02T14:54:53.040000+00:00","vuln_status":"Analyzed","description":"An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.","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-178","CWE-287"],"in_kev":true,"kev_date_added":"2021-11-03","kev_ransomware":true,"epss_score":0.45379,"epss_percentile":0.98789,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["AUTH_BYPASS","CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-10-08T03:17:51.909823+00:00","first_seen":"2020-07-24T23:15:12.003000+00:00","kev_first_seen":"2021-11-03T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["fortinet"],"products":["fortios"],"affected":[{"vendor":"fortinet","product":"fortios","ranges":["< 6.0.10","≥ 6.2.0 and < 6.2.4","6.4.0"]}]}