The following code is for security research and authorized testing only.
python
# CVE-2026-20847 PoC - Windows Shell Information Disclosure
# This PoC demonstrates the information disclosure vulnerability in Windows Shell
# Note: This is for educational and security testing purposes only
import subprocess
import sys
import os
def check_vulnerability():
"""
Check if the system is vulnerable to CVE-2026-20847
"""
print("[*] Checking for CVE-2026-20847 vulnerability...")
print("[*] Target: Windows Shell Information Disclosure")
# Check Windows version
try:
result = subprocess.run(['systeminfo'], capture_output=True, text=True, timeout=30)
if 'Windows' in result.stdout:
print("[+] Windows system detected")
print(f"[*] System Info:\n{result.stdout[:500]}")
except Exception as e:
print(f"[-] Error checking system: {e}")
# Check if KB patch is installed
# Replace with actual KB number from Microsoft's security advisory
kb_number = "KBXXXXXXX"
try:
result = subprocess.run(['wmic', 'qfe', 'list', 'brief'], capture_output=True, text=True, timeout=30)
if kb_number in result.stdout:
print(f"[+] Security patch {kb_number} is installed")
print("[-] System may not be vulnerable")
return False
else:
print(f"[-] Security patch {kb_number} is NOT installed")
print("[+] System may be vulnerable to CVE-2026-20847")
return True
except Exception as e:
print(f"[-] Error checking patches: {e}")
return None
def exploit_info():
"""
Display exploitation information
"""
print("\n[*] Exploitation Details:")
print("[*] Attack Vector: Network (AV:N)")
print("[*] Privileges Required: Low (PR:L)")
print("[*] User Interaction: None (UI:N)")
print("[*] Confidentiality Impact: High (C:H)")
print("[*] Integrity Impact: None (I:N)")
print("[*] Availability Impact: None (A:N)")
print("\n[!] This vulnerability allows attackers to:")
print(" 1. Obtain sensitive information from Windows Shell")
print(" 2. Perform network spoofing attacks")
print(" 3. Potentially escalate privileges using obtained information")
def main():
print("=" * 60)
print("CVE-2026-20847 - Windows Shell Information Disclosure")
print("=" * 60)
vulnerable = check_vulnerability()
exploit_info()
if vulnerable:
print("\n[!] WARNING: System appears to be vulnerable!")
print("[!] Recommended action: Install latest Windows security updates")
elif vulnerable is False:
print("\n[+] System appears to be patched")
else:
print("\n[*] Unable to determine vulnerability status")
if __name__ == "__main__":
main()