CVE-2026-2925

8.8 HIGH

📋 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 Bridge VLAN configuration endpoint. This affects DWR-M960 firmware version 1.01.07. Attackers can exploit this without authentication to potentially take full control of affected devices.

💻 Affected Systems

Products:
  • D-Link DWR-M960
Versions: 1.01.07
Operating Systems: Embedded Linux (router firmware)
Default Config Vulnerable: ⚠️ Yes
Notes: Affects the Bridge VLAN configuration endpoint which is typically accessible via web interface.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to complete device compromise, persistence, lateral movement to internal networks, and data exfiltration.

🟠

Likely Case

Device takeover for botnet enrollment, credential theft, or network traffic interception.

🟢

If Mitigated

Limited impact if network segmentation prevents access to vulnerable endpoints.

🌐 Internet-Facing: HIGH - The vulnerability is remotely exploitable and affects internet-facing router interfaces.
🏢 Internal Only: MEDIUM - Internal attackers could exploit if they gain network access to the management interface.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Public exploit details available on GitHub, making exploitation straightforward for attackers.

🛠️ 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. 3. Access router admin interface. 4. Navigate to firmware update section. 5. Upload and apply new firmware. 6. Reboot router.

🔧 Temporary Workarounds

Disable Remote Management

all

Prevent external access to router management interface

Access router admin > Advanced > Remote Management > Disable

Network Segmentation

all

Isolate router management interface from untrusted networks

Configure firewall rules to block external access to port 80/443 on router IP

🧯 If You Can't Patch

  • Implement strict network access controls to limit access to router management interface
  • Monitor for exploitation attempts using network IDS/IPS signatures

🔍 How to Verify

Check if Vulnerable:

Check firmware version in router admin interface under System > Firmware

Check Version:

Login to router web interface and navigate to System Information

Verify Fix Applied:

Verify firmware version is updated beyond 1.01.07

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to /boafrm/formBridgeVlan with long submit-url parameters
  • Multiple failed exploitation attempts

Network Indicators:

  • Unusual traffic patterns to router management interface
  • Buffer overflow exploitation patterns in network traffic

SIEM Query:

source="router_logs" AND uri="/boafrm/formBridgeVlan" AND (submit-url.length > 1000 OR status=500)

🔗 References

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