A vulnerability was found in D-Link DSL-6641K N8.TR069.20131126. Affected by this issue is the function doSubmitPPP of the file sp_pppoe_user.js. The manipulation of the argument Username results in cross site scripting. The attack may be launched remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction Required

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction Required

Access Vector Network

Access Complexity Low

Authentication Multiple

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00033.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
D-Link DSL-6641K affected
Version Status Constraints
N8.TR069.20131126 affected —

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://tzh00203.notion.site/D-Link-DSL6641K-version-N8-TR069-20131126-XSS-via-sp_pppoe_user-js-Configuration-2eeb5c52018a80d083aaf19efbaa9130?source=copy_link cve-icon cve-icon cve-icon
https://vuldb.com/?ctiid.343675 cve-icon cve-icon
https://vuldb.com/?id.343675 cve-icon cve-icon
https://vuldb.com/?submit.742439 cve-icon cve-icon
https://www.dlink.com/ cve-icon cve-icon
History

Tue, 03 Feb 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 03 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared D-link
D-link dsl-6641k
Vendors & Products D-link
D-link dsl-6641k

Mon, 02 Feb 2026 05:00:00 +0000

Type Values Removed Values Added
Description A vulnerability was found in D-Link DSL-6641K N8.TR069.20131126. Affected by this issue is the function doSubmitPPP of the file sp_pppoe_user.js. The manipulation of the argument Username results in cross site scripting. The attack may be launched remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.
Title D-Link DSL-6641K sp_pppoe_user.js doSubmitPPP cross site scripting
Weaknesses CWE-79
CWE-94
References
Metrics cvssV2_0

{'score': 3.3, 'vector': 'AV:N/AC:L/Au:M/C:N/I:P/A:N/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 2.4, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 2.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-02-03T15:32:40.494Z

Reserved: 2026-02-01T16:38:13.786Z

Link: CVE-2026-1744

cve-icon Vulnrichment

Updated: 2026-02-03T14:18:38.962Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-02T05:15:59.233

Modified: 2026-02-03T16:44:36.630

Link: CVE-2026-1744

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-02T09:26:10Z

Weaknesses