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CVE-2026-4166

MEDIUM CVSS 4.0: 5.1 EPSS 0.04%
Updated Mar 16, 2026
Wavlink
Parameter Value
CVSS 5.1 (MEDIUM)
Type CWE-94 (Code Injection), CWE-79 (Cross-Site Scripting (XSS))
Vendor Wavlink
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
Passive
Minimal interaction

Impact Assessment

Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v4.0