Fortinet · FortiOS and FortiProxy
CVE-2018-13382
Fortinet FortiOS and FortiProxy Improper Authorization
What it is
An Improper Authorization vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8 and 5.4.1 to 5.4.10 and FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7 under SSL VPN web portal allows an unauthenticated attacker to modify the password of an SSL VPN web portal user via specially crafted HTTP requests
CISA: An Improper Authorization vulnerability in Fortinet FortiOS and FortiProxy under SSL VPN web portal allows an unauthenticated attacker to modify the password.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: July 10, 2022
More exploited flaws from Fortinet
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Mar 18, 2025 | Authentication Bypass | FortiOS and FortiProxy | High 8.1 | 7.2% |
| Jan 14, 2025 | Authentication Bypass | FortiOS and FortiProxy | Critical 9.6 | 94% |
| Jan 10, 2022 | Out-of-bounds Write | FortiOS and FortiProxy | Medium 4.3 | 34% |
| Oct 16, 2026 | Path Traversal | Multiple Products | Medium 5.4 | 1.3% |
| Oct 1, 2026 | Path Traversal | FortiMail | Critical 9.8 | 4.6% |
| Sep 9, 2026 | Heap-based Buffer Overflow | Multiple Products | High 7.4 | 3.7% |
| Jul 27, 2026 | Exposure of Sensitive Information to an Unauthorized Actor | FortiOS | Medium 5.3 | 29% |
| Jul 16, 2026 | OS Command Injection | FortiSandbox | Critical 9.1 | 76% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.