CVE-2026-1744: A vulnerability was found in D-Link DSL-6641K N8.TR069.20131126

Routine

LOW 2.4MITIGATE

CVE-2026-1744 is a low-severity flaw (CVSS 2.4) affecting dsl-6641k firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	2.4 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-79, CWE-94
Published	2026-02-02
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: dlink

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-02 05:15 UTCPublished CVE record published
2026-06-17 10:16 UTCUpdated Record last modified

dlink dsl-6641k firmware MITIGATE

Affected: n8.tr069.20131126

Fixed in: no fixed release known

Safe to downgrade to: a release before n8.tr069.20131126

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-1744?

dsl-6641k firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-1744 being exploited?

CVE-2026-1744 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-1744 affect?

CVE-2026-1744 affects dsl-6641k firmware. Severity is low (CVSS 2.4). 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 l

How urgent is CVE-2026-1744?

Priority 24/100. Public exploit reference

Software pages

D-Link vulnerabilities

References

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