9.5
CRITICAL CVSS 4.0
CVE-2026-88771
A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands
Description

Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to an unauthenticated attacker to execute arbitrary commands.

INFO

Published Date :

Sept. 27, 2026, 4:02 p.m.

Last Modified :

Sept. 27, 2026, 4:02 p.m.

Remotely Exploit :

Yes !

Source :

NetScaler
Affected Products

The following products are affected by CVE-2026-88771 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 4.0 CRITICAL 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
Solution
Apply vendor updates to mitigate command execution vulnerability.
  • Update NetScaler ADC to version 14.1-73.37 or later.
  • Update NetScaler ADC FIPS to version 13.1.37.279 or later.
  • Update NetScaler Gateway to version 14.1-73.37 or later.
  • Update NetScaler Gateway to version 13.1-64.23 or later.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-88771 vulnerability anywhere in the article.

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.