CVE-2025-15190
📋 TL;DR
A stack-based buffer overflow vulnerability exists in D-Link DWR-M920 routers through firmware version 1.1.50. Remote attackers can exploit this by manipulating the ip6addr parameter in the formFilter component to execute arbitrary code or cause denial of service. This affects all users of vulnerable DWR-M920 router firmware.
💻 Affected Systems
- D-Link DWR-M920
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, network infiltration, data exfiltration, and persistent backdoor installation.
Likely Case
Remote denial of service causing router crashes and network disruption, potentially requiring physical reset.
If Mitigated
Limited impact if network segmentation isolates the router and external access is restricted.
🎯 Exploit Status
Public proof-of-concept exploit code is available. The vulnerability requires no authentication and has straightforward exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available at time of analysis
Restart Required: Yes
Instructions:
1. Check D-Link security advisories for firmware updates. 2. Download latest firmware from official D-Link support site. 3. Upload firmware via router web interface. 4. Reboot router after update.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to the vulnerable web interface
Access router admin interface > Advanced > Remote Management > Disable
Network Segmentation
allIsolate router management interface from untrusted networks
Configure firewall rules to restrict access to router IP on ports 80/443
🧯 If You Can't Patch
- Replace affected hardware with supported/patched equipment
- Implement strict network access controls and monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface: Login > Status > Device Info > Firmware VersionCheck Version:
curl -k https://[router-ip]/status_deviceinfo.htm | grep FirmwareVerify Fix Applied:
Verify firmware version is above 1.1.50 after update📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP POST requests to /boafrm/formFilter with long ip6addr parameters
- Router crash/reboot logs
Network Indicators:
- HTTP traffic to router management interface with abnormal parameter lengths
- Port scanning targeting router IP
SIEM Query:
source="router_logs" AND (uri="/boafrm/formFilter" AND param_length>100) OR event="device_reboot"