CVE-2025-60333
📋 TL;DR
This vulnerability is a stack overflow in the wepkey2 parameter of the setWiFiMultipleConfig function in TOTOLINK N600R routers. Attackers can exploit it by sending crafted input to cause a Denial of Service (DoS), potentially crashing the device. Only users of the specific TOTOLINK N600R router version are affected.
💻 Affected Systems
- TOTOLINK N600R
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device crash requiring physical reboot, potential remote code execution if combined with other vulnerabilities, and persistent service disruption.
Likely Case
Router becomes unresponsive, requiring manual reboot to restore WiFi and network services, causing temporary network outage.
If Mitigated
Minimal impact with proper network segmentation and access controls limiting exposure to the vulnerable interface.
🎯 Exploit Status
Exploit requires access to the web management interface, which typically requires authentication. The PoC demonstrates reliable DoS triggering.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check TOTOLINK website for firmware updates. 2. Download latest firmware. 3. Access router admin panel. 4. Navigate to firmware upgrade section. 5. Upload and apply new firmware. 6. Wait for reboot.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to the vulnerable web interface
Network Segmentation
allIsolate router management interface to trusted network segments only
🧯 If You Can't Patch
- Implement strict firewall rules to block all external access to router management interface (typically port 80/443)
- Change default admin credentials and implement strong authentication
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin panel under System Status or Firmware Upgrade sectionCheck Version:
Login to router admin panel and navigate to firmware information pageVerify Fix Applied:
Verify firmware version is newer than v4.3.0cu.7866_B20220506📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by large POST requests to WiFi configuration endpoints
- Router crash/reboot logs
Network Indicators:
- Unusual large payloads sent to router management port
- Sudden loss of router responsiveness
SIEM Query:
source="router_logs" AND (uri_path="/cgi-bin/setWiFiMultipleConfig" AND request_size>1000)