CVE-2025-60557
📋 TL;DR
This buffer overflow vulnerability in D-Link DIR600L routers allows attackers to execute arbitrary code by sending specially crafted requests to the formSetEasy_Wizard function. It affects users running firmware version FW116WWb01 on DIR600L Ax routers. Successful exploitation could lead to complete device compromise.
💻 Affected Systems
- D-Link DIR600L Ax
📦 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 networks.
Likely Case
Router crash/reboot causing denial of service, or limited code execution depending on exploit sophistication.
If Mitigated
No impact if device is not internet-facing and network segmentation prevents access to management interface.
🎯 Exploit Status
Public proof-of-concept exists in GitHub repository. Exploitation appears straightforward based on available technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check D-Link support site for firmware updates. 2. Download latest firmware for DIR600L Ax. 3. Log into router admin interface. 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 router management interface
Network Segmentation
allIsolate router management interface to trusted network segment only
🧯 If You Can't Patch
- Replace vulnerable router with supported model
- Implement strict firewall rules blocking all access to router management interface from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is FW116WWb01, device is vulnerable.Check Version:
Log into router web interface and check System Status or Firmware Update sectionVerify Fix Applied:
Verify firmware version has been updated to a version newer than FW116WWb01.📡 Detection & Monitoring
Log Indicators:
- Multiple requests to formSetEasy_Wizard with long curTime parameters
- Router crash/reboot logs
- Unusual outbound connections from router
Network Indicators:
- HTTP POST requests to router management interface with oversized curTime parameter
- Sudden loss of router connectivity
SIEM Query:
source="router_logs" AND ("formSetEasy_Wizard" OR "curTime" AND length>100)