CVE-2025-60555
📋 TL;DR
This buffer overflow vulnerability in D-Link DIR600L routers allows attackers to execute arbitrary code by sending specially crafted requests to the formSetWizardSelectMode function. It affects users of DIR600L routers with vulnerable firmware who have web management interfaces accessible. Successful exploitation could lead to complete device compromise.
💻 Affected Systems
- D-Link DIR600L
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full router compromise, credential theft, network traffic interception, and pivot to internal network.
Likely Case
Router crash/reboot causing temporary network disruption, or limited code execution if exploit is constrained.
If Mitigated
Denial of service from crash if exploit fails, or no impact if interface is not accessible.
🎯 Exploit Status
Public GitHub repository contains detailed analysis and likely exploit code. Buffer overflow via curTime parameter appears straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown - check D-Link security advisories
Restart Required: Yes
Instructions:
1. Check D-Link support site for firmware updates. 2. Download latest firmware for DIR600L. 3. Log into router admin panel. 4. Navigate to firmware update section. 5. Upload and apply new firmware. 6. Wait for router to reboot.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to web management interface
Log into router admin → Advanced → Remote Management → Disable
Change default credentials
allUse strong admin password to reduce attack surface
Log into router admin → Tools → Admin → Set strong password
🧯 If You Can't Patch
- Segment router on isolated network segment
- Implement network firewall rules to block access to router web interface (port 80/443)
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin panel under Status → FirmwareCheck Version:
curl -s http://router-ip/status.cgi | grep firmwareVerify Fix Applied:
Verify firmware version is newer than FW116WWb01 after update📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /formSetWizardSelectMode with long curTime parameters
- Router crash/reboot logs
Network Indicators:
- Unusual HTTP POST traffic to router port 80/443 with oversized parameters
SIEM Query:
source="router.log" AND "formSetWizardSelectMode" AND (curTime.length > 100 OR status=500)