CVE-2026-3612: Wavlink Wl-NU516U1 Firmware

High severity, CVSS 7.2. EPSS: 10.4% chance of exploitation in the next 30 days.

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.

Affected products

• Wavlink Wl-NU516U1 Firmware: version m16u1_v240425 only

Published 2026-03-06. Last modified 2026-06-17.