SECURELYN

CVE-2026-3661

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.

Scores

2.0
CVSS 2.0 out of 10, low severity.
11.3%
EPSS 11.3% chance of exploitation in the next 30 days.

The facts

Published
7 March 2026
Last changed
17 June 2026
NVD status
Analyzed
Severity
Low, CVSS 2.0 out of 10 (version 4.0)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R…
Weakness
Affects
  • wavlink wl-nu516u1 firmware
Known exploited
Not in the CISA Known Exploited Vulnerabilities catalogue in this build.
EPSS
11.3% chance of exploitation activity in the next 30 days (percentile 96).

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References