# CVE-2019-11634: Citrix Workspace Application and Receiver for Windows Remote Code Execution Vulnerability

Source: https://junglewise.ai/threats/cve-2019-11634-citrix-workspace-application-and-receiver-for-windows-remote-code  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-11-03. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2019-11634 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2021-11-03

Citrix Workspace Application and Receiver for Windows contain a remote code execution vulnerability due to incorrect access control. The flaw exists because local drive access preferences are not properly enforced, potentially allowing unauthorized access to the client's local drives.

Vendors: [Citrix](https://junglewise.ai/threats/vendors/citrix).

## Quick answers

**Is CVE-2019-11634 exploited in the wild?** Yes. CVE-2019-11634 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2019-11634?** Critical severity, with a CVSS score of 9.8, published 3 November 2021.

**Which products and versions are affected?** Citrix Workspace App before 1904; Citrix Receiver for Windows 4.9 Cumulative Update 6 and earlier.

**Is there a fix for CVE-2019-11634?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2019-11634 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2019-11634?** Check whether you run Citrix Receiver For Windows or Citrix Workspace Application. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Citrix Workspace App before 1904
- Citrix Receiver for Windows 4.9 Cumulative Update 6 and earlier

## Timeline

- 2019-05-22: disclosed: NVD Published Date
- 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog