RCE in Wavlink Nu516u1
CVE-2026-3704
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…
EPSS: 0.003 (52.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Wavlink Nu516u1 — versions 251208
- Wavlink Wl-nu516u1
- Wavlink Wl-nu516u1_firmware — versions 251208
Weakness classification (CWE)
References
- VDB-349650 | Wavlink NU516U1 Incomplete Fix CVE-2025-10959 firewall.cgi sub_405B2C command injection (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-349650 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #759233 | Wavlink NU516U1 V251208 Command Injection (Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (related, Exploit, Third Party Advisory)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
- cna@vuldb.com (patch, Broken Link)
Frequently asked questions
- What is CVE-2026-3704?
- CVE-2026-3704 is a medium-severity vulnerability in Wavlink Nu516u1, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.7/10. Published 2026-03-08.
- How severe is CVE-2026-3704?
- Medium severity. CVSS v3 base score is 4.7 out of 10.