Stack-based Buffer Overflow in D-Link DWR-M960 VPN Configuration
CVE-2026-2961

8.7HIGH

Key Information:

Vendor

D-link
Status
Dwr-m960
Vendor
CVE Published:
23 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2961?

A stack-based buffer overflow vulnerability exists in the D-Link DWR-M960's VPN Configuration Endpoint, specifically in the function sub_4196C4 within the formVpnConfigSetup file. An attacker could exploit this weakness by manipulating the submit-url argument, which may allow for remote code execution. This vulnerability has been publicly disclosed, raising concerns over the security implications and potential exploitation methods.

Affected Version(s)

DWR-M960 1.01.07

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-2961 - Proof of Concept

References

https://vuldb.com/?id.347328
vdb-entrytechnical-description
https://vuldb.com/?ctiid.347328
signaturepermissions-required
https://vuldb.com/?submit.754513
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LX-66-LX (VulDB User)
.