Check Point Advisories

D-Link DIR-823X Denial of Service (CVE-2025-1103)

Vulnerability
Protection

Check Point Reference:	CPAI-2025-0258
Date Published:	6 May 2025
Severity:	Medium
Last Updated:	Tuesday 06 May, 2025
Source:
Industry Reference:	CVE-2025-1103
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	D-Link DIR-823X firmware version 240126 D-Link DIR-823X firmware version 240802
Vulnerability Description	A denial-of-service vulnerability exists in D-Link DIR-823X. Successful exploitation of this vulnerability would allow a remote attacker to create a denial of service condition on the affected system.

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 D-Link DIR-823X Denial of Service (CVE-2025-1103) 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 Denial of Service (CVE-2025-1103)