CVE-2026-3612CWE-74CWE-77

Wavlink WL-NU516U1 OTA Online Upgrade adm.cgi sub_405AF4 command injection

High · published March 6, 2026

CVSS v4.0

8.6

EPSS

10%

Percentile

95.7

In the wild

Unconfirmed

What it is

A vulnerability was determined in Wavlink WL-NU516U1 V240425. This affects the function sub_405AF4 of the file /cgi-bin/adm.cgi of the component OTA Online Upgrade. This manipulation of the argument firmware_url causes command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

The record

Technical detail

CVSS v4.0: 8.6 · HIGH
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS: 0.10388 · 95.7th percentile
Weaknesses: CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published: 2026-03-06T00:32Z

EPSS history

Timeline

06 MAR 00:32Z
Wavlink WL-NU516U1 OTA Online Upgrade adm.cgi sub_405AF4 command injection
cvelistv5