Check Point Advisories

Apple Multiple Products Out Of Bounds Write (CVE-2025-43400)

Vulnerability
Protection

Check Point Reference:	CPAI-2025-17236
Date Published:	9 Feb 2026
Severity:	High
Last Updated:	Sunday 28 June, 2026
Source:
Industry Reference:	CVE-2025-43400
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Apple iPadOS prior to 18.7.1 Apple iPadOS 26.0 Apple iPhone OS prior to 18.7.1 Apple iPhone OS 26.0 Apple macOS 14.0 and later, prior to 14.8.1 Apple macOS 15.0 and later, prior to 15.7.1 Apple macOS 26.0 Apple visionOS prior to 26.0.1
Vulnerability Description	An out-of-bounds write vulnerability in Apple products allows processing a maliciously crafted font to lead to unexpected app termination or corrupt process memory.

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 Apple Multiple Products Out Of Bounds Write (CVE-2025-43400) 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: Apple Multiple Products Out Of Bounds Write (CVE-2025-43400)