CVE-2026-3661 MEDIUM

CVE-2026-3661: Wavlink WL-NU516U1 adm.cgi ota_new_upgrade command injection

Vendor Wavlink
Product WL-NU516U1
Weakness CWE-77
Published March 7, 2026
Last update March 11, 2026
View on NVD All CVEs

CVSS base score

5.1/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A flaw has been found in Wavlink WL-NU516U1 240425. This affects the function ota_new_upgrade of the file /cgi-bin/adm.cgi. This manipulation of the argument model causes command injection. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.

Key dates

02Disclosure timeline

March 7, 2026 CVE published
March 11, 2026 Record updated