What is CVE-2026-3612?

CVE-2026-3612 is a high-severity vulnerability in Wavlink Wl-nu516u1, classified under Command 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. I…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.005 (64.7th 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/E:P/RL:X/RC:R.

Affected products

Wavlink Wl-nu516u1 — versions V240425

Weakness classification (CWE)

References

VDB-349220 | Wavlink WL-NU516U1 OTA Online Upgrade adm.cgi sub_405AF4 command injection (vdb-entry, technical-description)
VDB-349220 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
Submit #754668 | Wavlink NU516U1 V240425 Command Injection (third-party-advisory)
github.com/Wlz1112/WAVLINK-NU516-V240425/blob/main/firmware_url.md (exploit)

Frequently asked questions

What is CVE-2026-3612?: CVE-2026-3612 is a high-severity vulnerability in Wavlink Wl-nu516u1, classified under Command 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.