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I. Basic Information for CVE-2026-4166
Vulnerability Information
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Vulnerability Title
Wavlink WL-NU516U1 login.cgi sub_404F68 cross site scripting
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in Wavlink WL-NU516U1 240425. The impacted element is the function sub_404F68 of the file /cgi-bin/login.cgi. The manipulation of the argument homepage/hostname results in cross site scripting. The attack can be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
WAVLINK WL-NU516U1 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WAVLINK WL-NU516U1是中国睿因（WAVLINK）公司的一款无线打印服务器。 WAVLINK WL-NU516U1 240425版本存在代码注入漏洞，该漏洞源于对文件/cgi-bin/login.cgi中函数sub_404F68的参数homepage/hostname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
VendorProductAffected VersionsCPESubscribe
WavlinkWL-NU516U1 240425 cpe:2.3:o:wavlink:wl-nu516u1_firmware:*:*:*:*:*:*:*:*
II. Public POCs for CVE-2026-4166
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III. Intelligence Information for CVE-2026-4166
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IV. Related Vulnerabilities
Same product: WL-NU516U1
Same vendor: Wavlink
Same weakness: CWE-79
V. Comments for CVE-2026-4166

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