Check Point Advisories

Microsoft Windows Message Queuing Type Confusion (CVE-2025-53143)

Vulnerability
Protection

Check Point Reference:	CPAI-2025-17835
Date Published:	5 Jul 2026
Severity:	High
Last Updated:	Sunday 05 July, 2026
Source:
Industry Reference:	CVE-2025-53143
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Windows 10 1507 prior to 10.0.10240.21100 Microsoft Windows 10 1607 prior to 10.0.14393.8330 Microsoft Windows 10 1809 prior to 10.0.17763.7678 Microsoft Windows 10 21H2 prior to 10.0.19044.6216 Microsoft Windows 10 22H2 prior to 10.0.19045.6216 Microsoft Windows 11 22H2 prior to 10.0.22621.5768 Microsoft Windows 11 23H2 prior to 10.0.22631.5768 Microsoft Windows 11 24H2 prior to 10.0.26100.4851 Microsoft Windows Server 2008 SP2 Microsoft Windows Server 2008 R2 SP1 Microsoft Windows Server 2012 Microsoft Windows Server 2012 R2 Microsoft Windows Server 2016 prior to 10.0.14393.8330 Microsoft Windows Server 2019 prior to 10.0.17763.7678 Microsoft Windows Server 2022 prior to 10.0.20348.3989 Microsoft Windows Server 2022 23H2 prior to 10.0.25398.1791 Microsoft Windows Server 2025 prior to 10.0.26100.4851
Vulnerability Description	A type confusion vulnerability in Microsoft Windows Message Queuing allows an authorized attacker to execute code over a network.

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 Windows Message Queuing Type Confusion (CVE-2025-53143) 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: Windows SMB Protection Violation.
Attack Information: Microsoft Windows Message Queuing Type Confusion (CVE-2025-53143)