---
id: CVE-2026-19490
title: >-
  Vulnerability in NetScaler ADC and NetScaler Gateway.


  This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21;
  Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.
summary: >-
  Vulnerability in NetScaler ADC and NetScaler Gateway.


  This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21;
  Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-288
vendor: citrix
product: netscaler_application_delivery_controller
affected:
  - 'netscaler_application_delivery_controller >= 13.1, < 13.1-37.277'
  - 'netscaler_application_delivery_controller >= 13.1, < 13.1-63.21'
  - 'netscaler_application_delivery_controller >= 14.1, < 14.1-73.32'
  - 'netscaler_application_delivery_controller >= 14.1-66.68, <= 14.1-73.32'
  - 'netscaler_gateway >= 13.1, < 13.1-63.21'
  - 'netscaler_gateway >= 14.1, < 14.1-73.32'
patched:
  - netscaler_application_delivery_controller 14.1-73.32
  - netscaler_gateway 14.1-73.32
published: '2026-08-19'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T12:48:10.453'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-19490'
references:
  - url: >-
      https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696939
    label: 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-19490
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - in-the-wild
  - exploit-available
  - kev
exploited: true
exploitAvailable: true
ssvc:
  exploitation: active
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-08-19T00:00:00+00:00'
scores:
  nvd: 9.8
  cna: 9.3
ingestedAt: '2026-09-13T10:44:37.174Z'
epss: 0.05597
epssPercentile: 0.9261
kev: true
kevDateAdded: '2026-09-09'
kevDueDate: '2026-09-12'
kevRansomware: false
exploits:
  github: 2
  githubRepos:
    - 'https://github.com/TarPeg007/CVE-2026-19490'
    - 'https://github.com/BishopFox/CVE-2026-19490-check'
  checkedAt: '2026-09-21T15:28:20.137Z'
---

## Overview

Vulnerability in NetScaler ADC and NetScaler Gateway.

This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.

## Affected

- `netscaler_application_delivery_controller >= 13.1, < 13.1-37.277`
- `netscaler_application_delivery_controller >= 13.1, < 13.1-63.21`
- `netscaler_application_delivery_controller >= 14.1, < 14.1-73.32`
- `netscaler_application_delivery_controller >= 14.1-66.68, <= 14.1-73.32`
- `netscaler_gateway >= 13.1, < 13.1-63.21`
- `netscaler_gateway >= 14.1, < 14.1-73.32`

## Remediation

Upgrade past the affected range:

- `netscaler_application_delivery_controller 14.1-73.32`
- `netscaler_gateway 14.1-73.32`