January 10, 2022 · Applied Cybernetics Group
CVE-2018-13383 — Fortinet FortiOS and FortiProxy
known ransomware use
Fortinet FortiOS and FortiProxy Out-of-bounds Write
- Added to KEV
2022-01-10- Federal due date
2022-07-10- Vendor
- Fortinet
- Product
- FortiOS and FortiProxy
- EPSS
- 83.0th percentile (score 0.018, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2018-13383
CISA short description
A heap buffer overflow in Fortinet FortiOS and FortiProxy may cause the SSL VPN web service termination for logged in users.
Required action
Apply updates per vendor instructions.