A logic issue was addressed with improved file handling. This issue is fixed in macOS Tahoe 26.5. A maliciously crafted ZIP archive may bypass Gatekeeper checks.
The following code is for security research and authorized testing only.
python
import zipfile
import os
# Create a malicious ZIP archive concept for PoC
# This script creates a ZIP containing a dummy executable
# In a real exploit, specific internal structures would be modified
def create_malicious_zip(output_path):
with zipfile.ZipFile(output_path, 'w') as zf:
# Simulate a payload file
payload_content = b'#!/bin/bash\necho "Gatekeeper Bypass POC"'
zf.writestr('malicious_app.app/Contents/MacOS/script', payload_content)
# Note: Actual CVE-2026-28914 exploitation would require specific
# file handling logic abuse in macOS Tahoe < 26.5
print(f'Created {output_path}')
if __name__ == '__main__':
create_malicious_zip('bypass_poc.zip')