CVE-2025-7465
📋 TL;DR
A critical buffer overflow vulnerability in Tenda FH1201 routers allows remote attackers to execute arbitrary code by sending specially crafted HTTP POST requests to the /goform/fromRouteStatic endpoint. This affects all users running vulnerable firmware versions, potentially giving attackers full control of affected devices. The vulnerability is remotely exploitable without authentication.
💻 Affected Systems
- Tenda FH1201
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, lateral movement to internal networks, persistent backdoor installation, and botnet recruitment.
Likely Case
Remote code execution allowing attackers to reconfigure the router, intercept network traffic, or use the device as a pivot point for further attacks.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering, though internal threats could still exploit the vulnerability.
🎯 Exploit Status
Exploit details have been publicly disclosed, making weaponization straightforward. The vulnerability requires no authentication and has a simple exploitation path.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.tenda.com.cn/
Restart Required: Yes
Instructions:
1. Check Tenda's official website for firmware updates. 2. If available, download the latest firmware. 3. Log into router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and apply the new firmware. 6. Reboot the router.
🔧 Temporary Workarounds
Block HTTP POST to vulnerable endpoint
linuxUse firewall rules to block HTTP POST requests to /goform/fromRouteStatic on the router's management interface
iptables -A INPUT -p tcp --dport 80 -m string --string "POST /goform/fromRouteStatic" --algo bm -j DROP
Disable remote management
allEnsure router web management interface is only accessible from LAN, not from WAN
🧯 If You Can't Patch
- Segment affected routers in isolated network zones with strict firewall rules
- Implement network monitoring for exploitation attempts and anomalous router behavior
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface or via SSH if available. Version 1.2.0.14 is confirmed vulnerable.Check Version:
Check router web interface at http://router-ip/ or use nmap to identify device versionVerify Fix Applied:
Verify firmware version has been updated to a version later than 1.2.0.14 and test that the /goform/fromRouteStatic endpoint no longer accepts malformed POST requests.📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /goform/fromRouteStatic with unusual parameter lengths
- Router reboot events or configuration changes not initiated by administrators
Network Indicators:
- Unusual outbound connections from router IP
- HTTP traffic to router with buffer overflow patterns in POST data
SIEM Query:
source="router_logs" AND (url="/goform/fromRouteStatic" AND method="POST" AND (content_length>1000 OR contains(content, "page=")) OR event="reboot")🔗 References
- https://candle-throne-f75.notion.site/Tenda-FH1201-fromRouteStatic-229df0aa118580ba952bd3f16857b176
- https://vuldb.com/?ctiid.316117
- https://vuldb.com/?id.316117
- https://vuldb.com/?submit.610389
- https://www.tenda.com.cn/
- https://candle-throne-f75.notion.site/Tenda-FH1201-fromRouteStatic-229df0aa118580ba952bd3f16857b176
