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Vulnerabilities

Vulnerability · CVE-2019-11634

Citrix Workspace Application and Receiver for Windows Remote Code Execution Vulnerability

Published May 22, 2019 · catalog updated Aug 11, 2026 · Citrix Workspace Application and Receiver for Windows

Patch now

CVE-2019-11634 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Citrix Workspace Application and Receiver for Windows against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
8.09%
Remediation
Remediation guidance
Affected products
cpe citrix/receiver · cpe citrix/workspace · vendor Citrix Workspace Application and Receiver for Windows

Citrix Workspace Application and Receiver for Windows contains remote code execution vulnerability resulting from local drive access preferences not being enforced into the clients' local drives.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe citrix/receiver4.9
  • cpe citrix/workspaceversion unspecified
  • vendor Citrix Workspace Application and Receiver for Windowsversion unspecified

How to fix CVE-2019-11634

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2019-11634 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Citrix Workspace Application and Receiver for Windows against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with 4.9. Apply updates per vendor instructions.

What should an analyst verify?

CWE-284: Improper Access Control. EPSS 8.09%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 22, 2019 · Catalog

    Detected

    Citrix Workspace Application and Receiver for Windows contains remote code execution vulnerability resulting from local drive access preferences not being enforced into the clients' local drives.

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Aug 11, 2026 · Catalog

    Updated

    Citrix Workspace Application and Receiver for Windows contains remote code execution vulnerability resulting from local drive access preferences not being enforced into the clients' local drives.

Sources

  • CISA KEVConfirmed exploitationCVE-2019-11634

    Citrix Workspace Application and Receiver for Windows contains remote code execution vulnerability resulting from local drive access preferences not being enforced into the clients' local drives.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2019-11634

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-11634

    30-day exploitation probability 8.1%

    first.org
  • NIST NVDVulnerability recordCVE-2019-11634

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

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2019-11634

    Citrix Workspace Application and Receiver for Windows contains remote code execution vulnerability resulting from local drive access preferences not being enforced into the clients' local drives.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.