CVE-2026-3704

low-risk

Published 2026-03-08

A vulnerability has been found in Wavlink NU516U1 251208. This vulnerability affects the function sub_405B2C of the file /cgi-bin/firewall.cgi of the component Incomplete Fix CVE-2025-10959. The manipulation leads to command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. It is recommended 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.

Do I need to act?

0.28% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 4.7/10 Medium

NETWORK / LOW complexity

Affected Products (1)

Wl-Nu516U1 Firmware

Affected Vendors

Wavlink

References (6)

Broken Link https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-02-27-2fcf6ae-mt762...

Exploit https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/wavlink_DMZ.md

Exploit https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/wavlink_DMZ.md#exp

Permissions Required https://vuldb.com/?ctiid.349650

Third Party Advisory https://vuldb.com/?id.349650

Third Party Advisory https://vuldb.com/?submit.759233

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low-risk

Severity 19/34 · Moderate

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal