Check Point Advisories

Mercury D196G Buffer Overflow (CVE-2025-50398; CVE-2025-50401)

Vulnerability
Protection

Check Point Reference:	CPAI-2025-10241
Date Published:	4 Jan 2026
Severity:	High
Last Updated:	Sunday 04 January, 2026
Source:
Industry Reference:	CVE-2025-50398 CVE-2025-50401
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Mercury D196G firmware version d196gv1-cn-up_2020-01-09_11.21.44
Vulnerability Description	A buffer overflow vulnerability exists in Mercury D196G. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system or cause application crashes.

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 Mercury D196G Buffer Overflow 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: Mercury D196G Buffer Overflow