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CVE-2026-1744— D-Link DSL-6641K sp_pppoe_user.js doSubmitPPP cross site scripting

Quick assessment

Affected
D-Link DSL-6641K
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

D-Link DSL-6641K是中国友讯（D-Link）公司的一款路由器。 D-Link DSL-6641K N8.TR069.20131126版本存在代码注入漏洞，该漏洞源于对文件sp_pppoe_user.js中函数doSubmitPPP的参数Username的错误操作，可能导致跨站脚本攻击。

CVSS 2.4 · Low EPSS 0.50% · P41
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I. Basic Information for CVE-2026-1744

Vulnerability Information
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Vulnerability Title
D-Link DSL-6641K sp_pppoe_user.js doSubmitPPP cross site scripting
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DSL-6641K 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DSL-6641K是中国友讯（D-Link）公司的一款路由器。 D-Link DSL-6641K N8.TR069.20131126版本存在代码注入漏洞，该漏洞源于对文件sp_pppoe_user.js中函数doSubmitPPP的参数Username的错误操作，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
D-Link DSL-6641K N8.TR069.20131126 -

II. Public POCs for CVE-2026-1744

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III. Intelligence Information for CVE-2026-1744

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Vendor Advisories for CVE-2026-1744 (1)

News Coverage for CVE-2026-1744 (1)

Vendor Pages for CVE-2026-1744 (1)

IV. Related Vulnerabilities

Same product: DSL-6641K
Same vendor: D-Link
Same weakness: CWE-79

V. Comments for CVE-2026-1744

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