Cross-Site Scripting Vulnerability in D-Link DSL-6641K
CVE-2026-1744

4.8MEDIUM

Key Information:

Vendor

D-link
Status
Dsl-6641k
Vendor
CVE Published:
2 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1744?

A cross-site scripting vulnerability has been identified in the D-Link DSL-6641K router, affecting the doSubmitPPP function in the sp_pppoe_user.js file. This flaw allows attackers to manipulate the Username argument, potentially executing arbitrary scripts in the context of the affected user's session. The vulnerability is particularly concerning as it is publicly known and can be exploited remotely, impacting users of a product that is no longer supported by D-Link.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

DSL-6641K N8.TR069.20131126

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-2026-1744 - Proof of Concept

References

https://vuldb.com/?id.343675
vdb-entrytechnical-description
https://vuldb.com/?ctiid.343675
signaturepermissions-required
https://vuldb.com/?submit.742439
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

tian (VulDB User)
JSON
.