Check Point Advisories

D-Link DIR-823X Remote Code Execution (CVE-2025-29039)

Vulnerability
Protection

Check Point Reference:	CPAI-2025-18740
Date Published:	30 Sep 2026
Severity:	High
Last Updated:	Wednesday 30 September, 2026
Source:
Industry Reference:	CVE-2025-29039
Protection Provided by:	Security Gateway R82, R81, R80, R77, R75
Who is Vulnerable?	D-Link DIR-823X 240802
Vulnerability Description	A remote code execution vulnerability in D-Link DIR-823X allows remote attackers to execute arbitrary code via the function 0x41dda8.

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 R82 / R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the D-Link DIR-823X Remote Code Execution (CVE-2025-29039) 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: D-Link DIR-823X Remote Code Execution (CVE-2025-29039)