CVE-2026-2853
📋 TL;DR
A stack-based buffer overflow vulnerability in D-Link DWR-M960 routers allows remote attackers to execute arbitrary code by manipulating the submit-url argument in the System Log Configuration endpoint. This affects D-Link DWR-M960 routers running firmware version 1.01.07. Attackers can exploit this without authentication to potentially take full control of affected devices.
💻 Affected Systems
- D-Link DWR-M960
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, lateral movement to internal networks, persistent backdoor installation, and data exfiltration.
Likely Case
Remote code execution allowing attackers to modify device configuration, intercept network traffic, or use the device as part of a botnet.
If Mitigated
If network segmentation and proper firewall rules are in place, impact may be limited to the affected device only.
🎯 Exploit Status
Public exploit details are available on GitHub. The vulnerability is in a web interface component, making exploitation straightforward for attackers with network access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.dlink.com/
Restart Required: Yes
Instructions:
1. Check D-Link website for firmware updates. 2. Download latest firmware for DWR-M960. 3. Access router web interface. 4. Navigate to firmware update section. 5. Upload and apply new firmware. 6. Reboot router after update.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router web interface
Access router web interface > Advanced > Remote Management > Disable
Network Segmentation
linuxIsolate router management interface from untrusted networks
iptables -A INPUT -p tcp --dport 80 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
🧯 If You Can't Patch
- Immediately isolate affected routers from internet using firewall rules
- Implement strict network access controls to limit who can reach the router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface: Login > Status > Device Info > Firmware VersionCheck Version:
curl -s http://router-ip/ | grep -i firmwareVerify Fix Applied:
Verify firmware version is no longer 1.01.07 and check that System Log Configuration endpoint no longer accepts malicious submit-url parameters📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /boafrm/formSysLog
- Large submit-url parameter values in web logs
- Multiple failed buffer overflow attempts
Network Indicators:
- Unusual traffic patterns to router management interface
- Exploit kit signatures targeting D-Link routers
- Unexpected outbound connections from router
SIEM Query:
source="router_logs" AND (uri="/boafrm/formSysLog" AND submit-url.length>1000)