Citrix Workspace app for Windows Security Bulletin CVE-2026-78546 and CVE-2026-78547

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Article ID: CTX697034

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Updated On:

Description

Citrix Workspace app for Windows contains the vulnerabilities mentioned below:

CVE-ID Description Pre-conditions CWE CVSS
CVE-2026-78546 Out-of-Bounds Read Local access to the target system CWE-125: Out-of-bounds Read CVSS v4.0 Base Score: 4.8
(CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N)
CVE-2026-78547 Out-of-Bounds Write Physical access to the target system CWE-787: Out-of-bounds Write CVSS v4.0 Base Score: 4.4
(CVSS:4.0/AV:P/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N)

What Customers Should Do

Citrix strongly recommends that customers upgrade their Citrix Workspace app for Windows to versions that contain the fixes as soon as possible.

Citrix Workspace app for Windows versions that contain the fixes are:

Current Release (CR)

  • Citrix Workspace app for Windows 2603.11 and later versions


Long Term Service Release (LTSR)

  • Citrix Workspace app for Windows 2507.1 LTSR CU3 and later versions
  • Citrix Workspace app for Windows 2607 LTSR

Environment

The information on this page is being provided to you on an "AS IS" and "AS-AVAILABLE" basis. The issues described on this page may or may not impact your system(s). Cloud Software Group, Inc. and its subsidiaries (collectively, "Cloud SG") make no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. BY ACCESSING THIS PAGE, YOU ACKNOWLEDGE THAT CLOUD SG SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. Cloud SG reserves the right to change or update the information on this page at any time. We accordingly recommend that you always view the latest version of this page. The information contained herein is being provided to you under the terms of your applicable customer agreement with Cloud SG, and may be used only for the purposes contemplated by such agreement. If you do not have such an agreement with Cloud SG, this information is provided under the cloud.com Terms of Use, and may be used only for the purposes contemplated by such Terms of Use.

Issue/Introduction

Severity - Medium

Description of Problem

Two vulnerabilities have been discovered that impact the Citrix Workspace app for Windows.

Affected Versions

The vulnerabilities affect the following supported versions of the Citrix Workspace app for Windows.

Current Release (CR)

  • Citrix Workspace app for Windows versions BEFORE 2603.11


Long Term Service Release (LTSR)

  • Citrix Workspace app for Windows versions BEFORE 2507.1 LTSR CU3
  • Citrix Workspace app for Windows versions BEFORE 2607 LTSR

Additional Information

Acknowledgement

Cloud Software Group thanks Eloghosa Obasuy for working with us to protect Cloud Software Group's customers.

What Citrix is Doing

Citrix is notifying customers and channel partners about this potential security issue through the publication of this security bulletin on the Citrix Knowledge Center at https://support.citrix.com/support-home/topic-article-list?trendingCategory=20&trendingTopicName=Security%20Bulletin

Obtaining Support on This Issue

If you require technical assistance with this issue, please contact Citrix Technical Support. Contact details for Citrix Technical Support are available at https://support.citrix.com/support-home/home

Subscribe to Receive Alerts

Citrix strongly recommends that all customers subscribe to receive alerts when a Citrix security bulletin is created or modified at https://support.citrix.com/wolken-support/view/aboutsupport/my-support-alerts  

Reporting Security Vulnerabilities to Citrix

Citrix welcomes input regarding the security of its products and considers any and all potential vulnerabilities seriously. For details on our vulnerability response process and guidance on how to report security-related issues to Citrix, please see the following webpage: https://www.cloud.com/trust-center/support 

Changelog

2026-09-08 Initial Publication