Medium severity · published Feb 2, 2026
CVE-2026-1744
D-Link DSL-6641K sp_pppoe_user.js doSubmitPPP cross site scripting
4.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DS
DSL-6641K · D-Link
N8.TR069.20131126 · source: vendor
DF
Dsl-6641k Firmware · Dlink
n8.tr069.20131126 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1744
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1744
Exploit
https://tzh00203.notion.site/D-Link-DSL6641K-version-N8-TR069-20131126-XSS-via-sp_pppoe_user-js-Configuration-2eeb5c52018a80d083aaf19efbaa9130?source=copy_link
Permissions Required
https://vuldb.com/?ctiid.343675
Third Party Advisory
https://vuldb.com/?id.343675
Third Party Advisory
https://vuldb.com/?submit.742439
Product
https://www.dlink.com/
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