Check Point Advisories

SEPPMail Secure Email Gateway Remote Code Execution (CVE-2026-2743; CVE-2026-44128)

Vulnerability
Protection

Check Point Reference:	CPAI-2026-5100
Date Published:	20 May 2026
Severity:	Critical
Last Updated:	Thursday 01 October, 2026
Source:
Industry Reference:	CVE-2026-2743 CVE-2026-44128
Protection Provided by:	Security Gateway R82, R81, R80, R77, R75
Who is Vulnerable?	SeppMail Secure Email Gateway 15.0.2.1 and prior
Vulnerability Description	A remote code execution vulnerability in SEPPMail Secure Email Gateway allows remote attackers to execute arbitrary code by exploiting path traversal during large file transfer.

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 SEPPMail Secure Email Gateway Remote Code Execution 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 Server Enforcement Violation.
Attack Information: SEPPMail Secure Email Gateway Remote Code Execution