CVE-2025-8958
📋 TL;DR
A stack-based buffer overflow vulnerability exists in Tenda TX3 router firmware version 16.03.13.11_multi_TDE01. Remote attackers can exploit this by sending specially crafted requests to the /goform/fast_setting_wifi_set endpoint, potentially leading to arbitrary code execution. This affects users running vulnerable Tenda TX3 router firmware.
💻 Affected Systems
- Tenda TX3
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete router compromise, network traffic interception, credential theft, and lateral movement into connected devices.
Likely Case
Router crash/reboot causing denial of service, or remote code execution allowing attacker persistence on the router.
If Mitigated
Denial of service from failed exploitation attempts if memory protections are enabled.
🎯 Exploit Status
Exploit details are publicly available on GitHub. The vulnerability requires no authentication and has simple exploitation vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates. 2. If update available, download and install via router web interface. 3. Reboot router after installation.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router management interface
Network segmentation
allIsolate router management interface to trusted network segments only
🧯 If You Can't Patch
- Replace affected router with updated model or different vendor
- Implement strict network firewall rules blocking access to port 80/443 on router from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface. If version is exactly 16.03.13.11_multi_TDE01, device is vulnerable.Check Version:
Check router web interface at http://[router-ip]/ or use nmap scan to identify device versionVerify Fix Applied:
Verify firmware version has changed from 16.03.13.11_multi_TDE01 after update.📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /goform/fast_setting_wifi_set with long ssid parameters
- Router crash/reboot logs
- Unusual outbound connections from router
Network Indicators:
- HTTP POST requests to router IP on port 80/443 with oversized ssid parameter
- Traffic patterns indicating buffer overflow attempts
SIEM Query:
source="router_logs" AND (url="/goform/fast_setting_wifi_set" AND parameter_length>100) OR event="buffer_overflow"