CVE-2025-7415
📋 TL;DR
This critical vulnerability in Tenda O3V2 routers allows remote attackers to execute arbitrary commands via command injection in the httpd component. Attackers can exploit this by manipulating the 'dest' parameter in the traceroute function to gain unauthorized access. All users running the affected firmware version are at risk.
💻 Affected Systems
- Tenda O3V2
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attackers to install malware, pivot to internal networks, steal credentials, or create persistent backdoors.
Likely Case
Unauthorized command execution leading to device takeover, network reconnaissance, or denial of service attacks.
If Mitigated
Limited impact if network segmentation, firewall rules, and access controls prevent exploitation attempts.
🎯 Exploit Status
Proof-of-concept exploit code is publicly available on GitHub, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda's official website for firmware updates. 2. Download the latest firmware for O3V2. 3. Access router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and apply the new firmware. 6. Reboot the router.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to the router's management interface
Access router admin panel -> System -> Remote Management -> Disable
Network Segmentation
allIsolate router management interface to trusted network segments only
Configure firewall rules to restrict access to router IP on port 80/443
🧯 If You Can't Patch
- Implement strict firewall rules to block all external access to the router's management interface
- Monitor network traffic for unusual HTTP requests to /goform/getTraceroute endpoint
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface under System Status or Firmware Upgrade sectionCheck Version:
Login to router admin interface and check firmware version in system settingsVerify Fix Applied:
Verify firmware version has been updated to a version newer than 1.0.0.12(3880)📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /goform/getTraceroute with unusual dest parameter values
- Command execution attempts in system logs
Network Indicators:
- Unusual outbound connections from router to external IPs
- HTTP POST requests to router with command injection patterns
SIEM Query:
source="router_logs" AND (url="/goform/getTraceroute" OR dest="*;*" OR dest="*|*" OR dest="*`*")