AEGLIX vulnerability intelligence
CVE-2020-12812
CRITICAL · CVSS 9.8 · Analyzed
Published: 2020-07-24 · Updated: 2026-10-02 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 9.8 · CRITICAL
- 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
- Weaknesses
- CWE-178, CWE-287
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Fortinet · FortiOS
- Added to catalog
- 2021-11-03
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-05-03
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
Before (exclusive): 6.0.10
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
From (inclusive): 6.2.0
Before (exclusive): 6.2.4
cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://fortiguard.com/psirt/FG-IR-19-283
Vendor Advisory
- https://fortiguard.com/psirt/FG-IR-19-283
Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812
US Government Resource