What is CVE-2026-3612?

CVE-2026-3612 is a high-severity vulnerability in Wavlink Wl-Nu516u1, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.2/10. Published 2026-03-06.

How severe is CVE-2026-3612?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Wavlink Wl-Nu516u1

CVE-2026-3612

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.

EPSS: 0.127 (96.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Wavlink Wl-nu516u1 — versions V240425
Wavlink Wl-nu516u1_firmware — versions m16u1_v240425

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
cna@vuldb.com (Exploit, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2026-3612?: CVE-2026-3612 is a high-severity vulnerability in Wavlink Wl-Nu516u1, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.2/10. Published 2026-03-06.
How severe is CVE-2026-3612?: High severity. CVSS v3 base score is 7.2 out of 10.