CVE-2020-12812
Summary
| CVE | CVE-2020-12812 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2020-07-24 23:15:00 UTC |
| Updated | 2022-07-12 17:42:00 UTC |
| 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. |
Risk And Classification
EPSS: 0.493440000 probability, percentile 0.987700000 (date 2026-07-22)
CISA KEV: Listed on 2021-11-03; due 2022-05-03; ransomware use Known
Problem Types: CWE-178
CISA Known Exploited Vulnerability
| Vendor | Fortinet |
|---|---|
| Product | FortiOS |
| Name | Fortinet FortiOS SSL VPN Improper Authentication Vulnerability |
| Required Action | Apply updates per vendor instructions. |
| Notes | https://nvd.nist.gov/vuln/detail/CVE-2020-12812 |
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| FortiOS SSL VPN 2FA bypass by changing username case | FortiGuard | MISC | fortiguard.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.