Check Point Advisories

Citrix NetScaler Multiple Products Command Injection (CVE-2026-88771)

Check Point Reference: CPAI-2026-13056
Date Published: 28 Sep 2026
Severity: Critical
Last Updated: Tuesday 29 September, 2026
Source:
Industry Reference:CVE-2026-88771
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Citrix NetScaler ADC prior to 14.1-73.37
Citrix NetScaler ADC prior to 13.1-64.23
Citrix NetScaler ADC prior to 14.1-73.37 FIPS
Citrix NetScaler ADC prior to 13.1.37.279 FIPS and NDcPP
Citrix NetScaler Gateway prior to 14.1-73.37
Citrix NetScaler Gateway prior to 13.1-64.23
Vulnerability Description A command injection vulnerability in Citrix NetScaler products allows unauthenticated attackers to execute arbitrary commands on the server. This issue affects ADC and Gateway products prior to specific versions, potentially leading to full system compromise.

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

  1. In the IPS tab, click Protections and find the Citrix NetScaler Multiple Products Command Injection (CVE-2026-88771) protection using the Search tool and Edit the protection's settings.
  2. 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 Command Injection (CVE-2026-88771)

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