CVE-2026-18590

Medium

Description

A vulnerability was determined in Wavlink WL-NU516U1 708c073-mt7628. Affected is the function set_sys_adm of the file adm.cgi of the component Admin Password Handler. This manipulation causes os command injection. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized. It is suggested to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

SeverityMedium

CVSS6.3

Exploit probability—

ProductWavlink Wl-nu516u1 Firmware

PublishedAug 3, 2026

First seenAug 3, 2026

Weakness typeCWE-78OS command injection CWE-77Command injection

How to fix

Patches

dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-07-13-4b8a21f-mt7628-squashfs-sysupgrade.bin

Affected products

Product	Affected versions	Fixed in
wavlink wl-nu516u1_firmware	708c073-mt7628	—

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