Check Point Advisories

Citrix NetScaler Multiple Products Buffer Overflow (CVE-2026-88772)

Vulnerability
Protection

Check Point Reference:	CPAI-2026-13231
Date Published:	30 Sep 2026
Severity:	Critical
Last Updated:	Wednesday 30 September, 2026
Source:
Industry Reference:	CVE-2026-88772
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Citrix NetScaler ADC 13.1 and later, prior to 13.1-64.23 Citrix NetScaler ADC 14.1 and later, prior to 14.1-73.37 Citrix NetScaler ADC 14.1-66.68 and later, 14.1-73.37 and prior (FIPS) Citrix NetScaler ADC 13.1 and later, prior to 13.1.37.279 (FIPS and NDcPP) Citrix NetScaler Gateway 13.1 and later, prior to 13.1-64.23 Citrix NetScaler Gateway 14.1 and later, prior to 14.1-73.37
Vulnerability Description	A buffer overflow vulnerability exists in multiple Citrix NetScaler products. 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 Citrix NetScaler Multiple Products Buffer Overflow (CVE-2026-88772) 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: Citrix NetScaler Multiple Products Buffer Overflow (CVE-2026-88772)