Exploited Vulnerabilities DailyCVE-2020-12812: Fortinet FortiOS
EPSS45.3%No. 901 of 1739 in KEV
CVE year2020~1 yrs before listing
Same vendor in KEV31
Same product9
| Field | Value |
|---|---|
| Vendor | Fortinet |
| Product | FortiOS |
| Name | Fortinet FortiOS SSL VPN Improper Authentication Vulnerability |
| Added to KEV | 2021-11-03 |
| US federal due date | 2022-05-03 |
| Ransomware use | Known |
| CWE | CWE-178, CWE-287 |
CISA description
Fortinet FortiOS SSL VPN contains an improper authentication vulnerability that may allow a user to login successfully without being prompted for the second factor of authentication (FortiToken) if they change the case in their username.
Other entries for this product
| CVE | Vendor / product | Added | EPSS | Ransomware |
|---|---|---|---|---|
| CVE-2025-68686 | Fortinet FortiOS | 2026-07-27 | 29.4% | Unknown |
| CVE-2019-6693 | Fortinet FortiOS | 2025-06-25 | 5.8% | Known |
| CVE-2024-21762 | Fortinet FortiOS | 2024-02-09 | 83.4% | Known |
| CVE-2022-41328 | Fortinet FortiOS | 2023-03-14 | 10.6% | Unknown |
| CVE-2022-42475 | Fortinet FortiOS | 2022-12-13 | 99.4% | Known |
| CVE-2021-44168 | Fortinet FortiOS | 2021-12-10 | 0.8% | Unknown |
| CVE-2019-5591 | Fortinet FortiOS | 2021-11-03 | 18.5% | Known |
| CVE-2018-13379 | Fortinet FortiOS | 2021-11-03 | 99.9% | Known |
Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page
A Fortinet FortiOS vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2021-11-03.