CVE-2026-20823: Windows File Explorer敏感信息泄露漏洞

// CVE-2026-20823 PoC Concept // Windows File Explorer Information Disclosure // This is a conceptual PoC for educational purposes only // Note: Actual PoC requires specific conditions and Windows version // The vulnerability allows local low-privilege users to access unauthorized files // Basic verification concept (pseudo-code): /* function verify_vulnerability() { // 1. Create a low-privilege user account // 2. Place sensitive file in protected location (e.g., other user's folder) // 3. Use File Explorer to navigate to the protected location // 4. Attempt to view file content through preview/thumbnail // 5. If content is accessible without proper permissions, vulnerability exists } // Mitigation: Install Microsoft Security Update KBXXXXXXX // Reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20823 */ import subprocess import os def check_cve_2026_20823(): """ Check if system is vulnerable to CVE-2026-20823 Requires: Windows OS with File Explorer """ # Check installed Windows updates for the patch try: result = subprocess.run([ 'powershell', '-Command', 'Get-HotFix | Where-Object {$_.Description -like "*Security*"} | Select-Object HotFixID, InstalledOn' ], capture_output=True, text=True, timeout=30) # Check for specific KB related to CVE-2026-20823 # The actual KB number should be verified on Microsoft's website print('[+] Checking for security updates...') print(result.stdout) return True except Exception as e: print(f'[-] Error checking updates: {e}') return False if __name__ == '__main__': print('CVE-2026-20823 Vulnerability Checker') print('Windows File Explorer Information Disclosure') check_cve_2026_20823()