CVE-2026-3612 HIGH

CVE-2026-3612: Wavlink WL-NU516U1 OTA Online Upgrade adm.cgi sub_405AF4 command injection

Vendor Wavlink
Product WL-NU516U1
Weakness CWE-77
Published March 6, 2026
Last update March 9, 2026
View on NVD All CVEs

CVSS base score

8.6/10
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:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability was determined in Wavlink WL-NU516U1 V240425. This affects the function sub_405AF4 of the file /cgi-bin/adm.cgi of the component OTA Online Upgrade. This manipulation of the argument firmware_url causes command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

Key dates

02Disclosure timeline

March 6, 2026 CVE published
March 9, 2026 Record updated