WAVLINK-SA-2026-071301: Command Injection in WL-NU516U1
Abstract
A security flaw has been discovered in Wavlink WL-NU516U1 260515. This affects the function wlink_uci_set_value of the file /cgi-bin/adm.cgi. Performing a manipulation of the argument lan_ip results in os command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. You should 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 security flaw has been discovered in Wavlink WL-NU516U1 260515. This affects the function wlink_uci_set_value of the file /cgi-bin/adm.cgi. Performing a manipulation of the argument lan_ip results in os command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. You should 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-2026-15513 · 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 0xcc12138 for reporting this vulnerability.
Reference
CVE-2026-15513 · NVD entry