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CVE-2026-4166

Wavlink WL-NU516U1 login.cgi sub_404F68 cross site scripting

CVSS 5.1 MEDIUMEPSS 0.2%CWE-79CWE-94
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5.1EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
15 Mar 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Affected products
Wavlink · WL-NU516U1

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References
https://github.com/Litengzheng/vul_db/blob/main/WL-NU516U1/vul_14/README.mdhttps://github.com/Litengzheng/vul_db/blob/main/WL-NU516U1/vul_15/README.mdhttps://vuldb.com/?ctiid.351073https://vuldb.com/?id.351073https://vuldb.com/?submit.769652https://vuldb.com/?submit.769653