WAVLINK-SA-2026-080304: Command Injection in WL-NU516U1
Abstract
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.
Affected Products
| Product | Affected Firmware | Fixed Firmware | Availability |
|---|---|---|---|
| WL-NU516U1 Wi-Fi Router | M16U1_V251208 and earlier |
M16U1_V260713 |
Available now · Download |
Detail
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. Tracked as CVE-2026-18590 · CVSS v3.1 6.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)
Solution
Update the firmware to version M16U1_V260713 or later.
Acknowledgement
Thanks to oduoke567 for reporting this vulnerability.
Reference
CVE-2026-18590 · NVD entry