Check Point Advisories

OpenSSL Stack Overflow (CVE-2025-15467)

Vulnerability
Protection

Check Point Reference:	CPAI-2025-11607
Date Published:	29 Jan 2026
Severity:	High
Last Updated:	Sunday 01 February, 2026
Source:
Industry Reference:	CVE-2025-15467
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	OpenSSL 3.6 OpenSSL 3.5 OpenSSL 3.4 OpenSSL 3.3 OpenSSL 3.0
Vulnerability Description	A stack overflow vulnerability in OpenSSL allows attackers to cause a denial of service or potentially execute remote code by sending a crafted message with malicious parameters. The vulnerability arises from copying an oversized IV into a fixed-size stack buffer without verifying its length.

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 OpenSSL Stack Overflow (CVE-2025-15467) 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: OpenSSL Enforcement Violation.
Attack Information: OpenSSL Stack Overflow (CVE-2025-15467)