CVE-2026-2615: Wavlink Wl-NU516U1 Firmware

High severity, CVSS 7.2. EPSS: 8% chance of exploitation in the next 30 days.

A flaw has been found in Wavlink WL-NU516U1 up to 20251208. The affected element is the function singlePortForwardDelete of the file /cgi-bin/firewall.cgi. Executing a manipulation of the argument del_flag can lead to command injection. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Wavlink Wl-NU516U1 Firmware: up to and including 2025-12-08

Published 2026-02-17. Last modified 2026-06-17.