SB20200716117 - Improper Authentication in Fortinet FortiOS
Published: July 16, 2020 Updated: January 5, 2026
Security Bulletin ID
SB20200716117
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Authentication (CVE-ID: CVE-2020-12812)
CWE-ID: CWE-287 - Improper Authentication
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in when processing authentication requests in SSL VPN. A remote authenticated attacker can changed the case of their username and gain unauthorized access to the application without being prompted for the second factor of authentication (FortiToken).
Remediation
Install update from vendor's website.