CVE-2026-3661

low-risk

Published 2026-03-07

A flaw has been found in Wavlink WL-NU516U1 240425. This affects the function ota_new_upgrade of the file /cgi-bin/adm.cgi. This manipulation of the argument model causes command injection. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.

Do I need to act?

0.23% 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 (4)

Exploit https://github.com/jinhao118/cve/blob/main/WAVLINK_1.md

Permissions Required https://vuldb.com/?ctiid.349550

Third Party Advisory https://vuldb.com/?id.349550

Third Party Advisory https://vuldb.com/?submit.758227

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low-risk

Severity 19/34 · Moderate

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal