Check Point Advisories

Wavlink WL-NU516U1 Stack Overflow (CVE-2026-2565; CVE-2026-2567; CVE-2026-3613; CVE-2026-3703)

Vulnerability
Protection

Check Point Reference:	CPAI-2026-2676
Date Published:	9 Apr 2026
Severity:	High
Last Updated:	Thursday 09 April, 2026
Source:
Industry Reference:	CVE-2026-2565 CVE-2026-2567 CVE-2026-3613 CVE-2026-3703
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Wavlink WL-NU516U1 V20251208 Wavlink WL-NU516U1 V240425
Vulnerability Description	A stack overflow vulnerability exists in Wavlink WL-NU516U1. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system or cause application crashes.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Wavlink WL-NU516U1 Stack Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Application Servers Protection Violation.
Attack Information: Wavlink WL-NU516U1 Stack Overflow