Is CVE-2026-4166 actively exploited?

No active exploitation of CVE-2026-4166 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4166 be exploited remotely?

Yes. CVE-2026-4166 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4166?

CVE-2026-4166 has a CVSS score of 3.5 (LOW).

HOME VULNERABILITIESCVE-2026-4166

LOW

CVE-2026-4166

CWE-79Published: March 16, 2026· Updated: Mar 16, 2026

3.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:9.6th

Official Description

A vulnerability was found in Wavlink WL-NU516U1 240425. The impacted element is the function sub_404F68 of the file /cgi-bin/login.cgi. The manipulation of the argument homepage/hostname results in cross site scripting. The attack can be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure.

NVD Source

Technical Analysis

CVE-2026-4166 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.