CVE-2025-60662
📋 TL;DR
A stack overflow vulnerability in Tenda AC18 routers allows remote attackers to execute arbitrary code or cause denial of service by sending specially crafted requests to the wanSpeed parameter. This affects all users running the vulnerable firmware version on Tenda AC18 routers. Successful exploitation could lead to complete device compromise.
💻 Affected Systems
- Tenda AC18
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full router compromise, credential theft, network traffic interception, and lateral movement to internal devices.
Likely Case
Router crash/reboot causing temporary network outage, or limited code execution allowing attacker persistence on the router.
If Mitigated
Denial of service only if exploit fails or memory protections prevent code execution.
🎯 Exploit Status
The reference link contains technical details and likely includes proof-of-concept code. Stack overflow vulnerabilities in embedded devices are frequently weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check Tenda's official website for firmware updates. 2. Download latest firmware for AC18. 3. Log into router admin interface. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload and install new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router web interface
Network Segmentation
allIsolate router management interface to trusted network
🧯 If You Can't Patch
- Replace vulnerable router with different model/brand
- Implement strict firewall rules blocking all external access to router management ports (typically 80, 443, 8080)
🔍 How to Verify
Check if Vulnerable:
Log into router web interface, navigate to System Status > Firmware Version, check if version is V15.03.05.19Check Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
After firmware update, verify version is newer than V15.03.05.19📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/advSetMacMtuWan
- Router crash/reboot logs
- Large payloads in wanSpeed parameter
Network Indicators:
- HTTP requests with oversized wanSpeed parameter to router IP
- Unusual traffic patterns from router after exploitation
SIEM Query:
source="router_logs" AND (uri_path="/goform/advSetMacMtuWan" OR message="wanSpeed")