Check Point Advisories

Microsoft Internet Explorer Null Pointer Dereference

Vulnerability
Protection

Check Point Reference:	CPAI-2025-0299
Date Published:	19 May 2025
Severity:	High
Last Updated:	Monday 19 May, 2025
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Internet Explorer
Vulnerability Description	A Null Pointer Dereference vulnerability exists in Microsoft Internet Explorer. Successful exploitation could result in a denial of service condition on the affected service.

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 Microsoft Internet Explorer Null Pointer Dereference 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: Web Client Enforcement Violation.
Attack Information: Microsoft Internet Explorer Null Pointer Dereference