What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 8.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-05-22 · updated 2026-08-12
• Weakness: CWE-284

Description

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

Affected products

• Citrix Receiver: 4.9-cumulative_update_6
• Citrix Workspace app for Windows: before 1904 — fixed in 1904

How to fix

Upgrade to a fixed version: Citrix Workspace app for Windows 1904. Check the vendor advisory for mitigations.

References

• https://support.citrix.com/article/CTX251986
• https://support.citrix.com/v1/search?searchQuery=%22%22&lang=en&sort=cr_date_desc&prod=&pver=&ct=Security+Bulletin
• https://support.citrix.com/article/CTX251986
• https://support.citrix.com/v1/search?searchQuery=%22%22&lang=en&sort=cr_date_desc&prod=&pver=&ct=Security+Bulletin
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11634

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