CVE-2026-2960

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 parameter. This affects D-Link DWR-M960 version 1.01.07. The vulnerability is remotely exploitable without authentication.

💻 Affected Systems

Products:
  • D-Link DWR-M960
Versions: 1.01.07
Operating Systems: Embedded router firmware
Default Config Vulnerable: ⚠️ Yes
Notes: All devices running the vulnerable firmware version are affected. The vulnerability is in the DHCPv6 configuration form handler.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete device compromise leading to persistent backdoor installation, network traffic interception, and lateral movement to other devices on the network.

🟠

Likely Case

Remote code execution allowing attacker to modify router settings, intercept traffic, or use the device as part of a botnet.

🟢

If Mitigated

Limited impact if device is behind firewall with restricted WAN access and proper network segmentation.

🌐 Internet-Facing: HIGH - The vulnerability is remotely exploitable and affects internet-facing routers directly exposed to attackers.
🏢 Internal Only: MEDIUM - Internal attackers or compromised internal devices could exploit this vulnerability to pivot through the network.

🎯 Exploit Status

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

Exploit details have been published on GitHub and vulnerability databases, 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. Upload via router admin interface 4. Reboot router

🔧 Temporary Workarounds

Disable WAN access to admin interface

all

Block external access to router administration interface

Configure firewall to block WAN access to port 80/443 on router

Disable DHCPv6 if not needed

all

Turn off DHCPv6 functionality to remove attack surface

Login to router admin > Network Settings > Disable DHCPv6

🧯 If You Can't Patch

  • Isolate affected routers in separate VLAN with strict firewall rules
  • Implement network monitoring for unusual traffic patterns from router

🔍 How to Verify

Check if Vulnerable:

Check router firmware version in admin interface. If version is 1.01.07, device is vulnerable.

Check Version:

Login to router admin interface and check System Information or Firmware Version

Verify Fix Applied:

Verify firmware version has been updated to a version later than 1.01.07

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to /boafrm/formDhcpv6s with long submit-url parameters
  • Router reboot events
  • Configuration changes without authorized user

Network Indicators:

  • Unusual outbound connections from router
  • Traffic spikes from router to unknown destinations
  • DHCPv6 configuration changes

SIEM Query:

source="router_logs" AND (uri="/boafrm/formDhcpv6s" AND data_length>1000) OR event="firmware_change"

🔗 References

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