Hard-Coded Credentials Vulnerability in D-Link DSL-6740C Router
CVE-2026-129444

10CRITICAL

Key Information:

Vendor

D-link
Status
Dsl-6740c
Vendor
CVE Published:
15 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-129444?

The D-Link DSL-6740C router contains a vulnerability within the FTP Daemon component, specifically in the ftpd_conf.php file. This flaw exposes hard-coded credentials, allowing unauthorized remote access to the device. Attackers can exploit this vulnerability using publicly available methods, potentially leading to serious security breaches. It is crucial for users to address this vulnerability to safeguard their networks.

Affected Version(s)

DSL-6740C 20131126

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-2026-129444 - Proof of Concept

References

https://vuldb.com/vuln/437457
vdb-entry
https://vuldb.com/vuln/437457/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-129444
third-party-advisory

CVSS V4

Score:
10
Severity:
CRITICAL
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

BenSmith (VulDB User)
.