{"cve":"CVE-2020-12812","nvd":{"published":"2020-07-24T23:15:12.003","modified":"2026-10-02T14:54:53.040","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-178","CWE-287"],"references":["https://fortiguard.com/psirt/FG-IR-19-283","https://fortiguard.com/psirt/FG-IR-19-283","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812"],"products":["fortinet:fortios"],"source":"nvd","synced_at":"2026-10-19T21:06:22.076270124+00:00"},"epss":{"cve":"CVE-2020-12812","score":0.45379,"percentile":0.98779,"date":"2026-10-25"},"kev":{"cve":"CVE-2020-12812","date_added":"2021-11-03","due_date":"2022-05-03","vendor":"Fortinet","product":"FortiOS","known_ransomware":true},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}