CVE-2026-53563

Citrix strongly recommends that customers upgrade their Citrix UniconOS to versions that contain the fixes as soon as possible. Citrix UniconOS versions that contain the fixes are: Current Release (CR) Citrix UniconOS 2607.2 and later versions Long Term Service Release (LTSR) Citrix UniconOS 2603 LTSR CU2 and later versions 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 Holdings, Inc. and its affiliates, including Citrix Systems, Inc. (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. Cloud SG accordingly recommends 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. Severity - High Description of Problem Vulnerabilities have been discovered in Citrix

Vendor-listed releases

• Citrix UniconOS 2607.2 and later versions
• Citrix UniconOS 2603 LTSR CU2 and later versions