---
id: CVE-2023-3519
title: Unauthenticated remote code execution
summary: Unauthenticated remote code execution
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-94
  - CWE-94
vendor: citrix
product: netscaler_application_delivery_controller
affected:
  - 'netscaler_application_delivery_controller >= 12.1, < 12.1-55.297'
  - 'netscaler_application_delivery_controller >= 13.0, < 13.0-91.13'
  - 'netscaler_application_delivery_controller >= 13.1, < 13.1-37.159'
  - 'netscaler_application_delivery_controller >= 13.1, < 13.1-49.13'
  - 'netscaler_gateway >= 13.0, < 13.0-91.13'
  - 'netscaler_gateway >= 13.1, < 13.1-49.13'
patched:
  - netscaler_application_delivery_controller 13.1-49.13
  - netscaler_gateway 13.1-49.13
published: '2023-07-19'
updated: '2026-08-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-3519'
references:
  - url: >-
      http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html
    label: secure@citrix.com
  - url: >-
      https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467
    label: secure@citrix.com
  - url: >-
      http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-3519
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
epss: 0.99749
epssPercentile: 0.99955
kev: true
kevDateAdded: '2023-07-19'
kevDueDate: '2023-08-09'
kevRansomware: true
exploited: true
zeroDay: true
ingestedAt: '2026-08-05T05:45:57.527Z'
exploits:
  github: 13
  githubRepos:
    - 'https://github.com/telekom-security/cve-2023-3519-citrix-scanner'
    - 'https://github.com/securekomodo/citrixInspector'
    - 'https://github.com/mr-r3b00t/CVE-2023-3519'
  metasploit:
    - exploit/freebsd/http/citrix_formssso_target_rce
  nuclei:
    - CVE-2023-3519
  checkedAt: '2026-09-21T15:25:50.789Z'
exploitAvailable: true
---

## Overview

Unauthenticated remote code execution

## Affected

- `netscaler_application_delivery_controller >= 12.1, < 12.1-55.297`
- `netscaler_application_delivery_controller >= 13.0, < 13.0-91.13`
- `netscaler_application_delivery_controller >= 13.1, < 13.1-37.159`
- `netscaler_application_delivery_controller >= 13.1, < 13.1-49.13`
- `netscaler_gateway >= 13.0, < 13.0-91.13`
- `netscaler_gateway >= 13.1, < 13.1-49.13`

## Remediation

Upgrade past the affected range:

- `netscaler_application_delivery_controller 13.1-49.13`
- `netscaler_gateway 13.1-49.13`