---
id: CVE-2019-11634
title: Citrix Workspace App before 1904 for Windows has Incorrect Access Control.
summary: Citrix Workspace App before 1904 for Windows has Incorrect Access Control.
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-284
vendor: citrix
product: receiver
affected:
  - receiver = 4.9
  - workspace < 1904
patched:
  - workspace 1904
published: '2019-05-22'
updated: '2026-08-12'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2019-11634'
references:
  - url: 'https://support.citrix.com/article/CTX251986'
    label: cve@mitre.org
  - url: >-
      https://support.citrix.com/v1/search?searchQuery=%22%22&lang=en&sort=cr_date_desc&prod=&pver=&ct=Security+Bulletin
    label: cve@mitre.org
  - url: 'https://support.citrix.com/article/CTX251986'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://support.citrix.com/v1/search?searchQuery=%22%22&lang=en&sort=cr_date_desc&prod=&pver=&ct=Security+Bulletin
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11634
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
epss: 0.08026
epssPercentile: 0.94525
kev: true
kevDateAdded: '2021-11-03'
kevDueDate: '2022-05-03'
kevRansomware: true
exploited: true
ingestedAt: '2026-08-12T05:52:07.096Z'
---

## Overview

Citrix Workspace App before 1904 for Windows has Incorrect Access Control.

## Affected

- `receiver = 4.9`
- `workspace < 1904`

## Remediation

Upgrade past the affected range:

- `workspace 1904`