
Fortinet FortiClientEMS improper access control
Proof of Concept (PoC) for FortiClient Endpoint Management Server authentication bypass (CVE-2026-35616)
This script exploits an authentication bypass vulnerability in FortiClient EMS that allows unauthenticated access to protected API endpoints.
pip install requests urllib3 cryptography
Requires openssl in PATH.
python3 cve_2026_35616.py <target> [port]
python3 cve_2026_35616.py 192.168.1.100
python3 cve_2026_35616.py 192.168.1.100 8443

Legal Use Only: This script must only be used on systems where you have explicit written permission to test. Unauthorized use is illegal and unethical.
This PoC is for educational and authorized security testing only.
Do not use it against systems without explicit written permission.
The author is not responsible for any misuse or damage caused by this tool.