CVE-2026-4166

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 v4.0

2.0 LOWCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

3.5 LOWCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

CVSS v2.0

4.0 MEDIUMAV:N/AC:L/Au:S/C:N/I:P/A:N

EPSS

0.20% chance of exploitation in the next 30 days, 10th percentile

Published

2026-03-15

Updated

2026-03-17

Proof-of-concept exploits (1)

• Litengzheng/vul_db/blob/main/WL-NU516U1/vul_15/README.md

References

• CVE Record
• NVD entry

Related

• CVE-2026-41658
• CVE-2026-41660
• CVE-2026-41657
• CVE-2026-41661
• CVE-2026-41656
• CVE-2026-41662