CVE-2023-26209: Fortinet Fortideceptor

Medium severity, CVSS 5.3. EPSS: 1.7% chance of exploitation in the next 30 days.

A improper restriction of excessive authentication attempts vulnerability [CWE-307] in Fortinet FortiDeceptor 3.1.x and before allows a remote unauthenticated attacker to partially exhaust CPU and memory via sending numerous HTTP requests to the login form.

Affected products

• Fortinet Fortideceptor: from 1.0.0, before 3.2.0 (fixed in 3.2.0)

Published 2023-03-09. Last modified 2026-06-17.