CVE-2026-53563: Vulnerability in Citrix UniconOS
Description
CVE-2026-53563 is a vulnerability in Citrix UniconOS that allows persistent command execution. It affects versions before 2607.2 CR and before 2603 LTSR CU2. The vulnerability has a medium severity with a CVSS 4.0 base score of 6.9. There are no known exploits in the wild and no cloud service implications.
CVSS v4.0
Score 6.9medium
Affected software
Citrix
UniconOS
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Citrix UniconOS allows an attacker with low privileges and local access to execute commands persistently on the affected system. The CVSS 4.0 vector indicates low attack complexity and no user interaction required, but limited privileges and local attack vector. The vulnerability affects versions prior to 2607.2 CR and 2603 LTSR CU2. No public exploit code or active exploitation has been reported.
Potential Impact
An attacker with low privileges and local access could achieve persistent command execution on the affected Citrix UniconOS systems. This could lead to unauthorized control or manipulation of the system. However, the attack requires local access and low privileges, limiting the scope of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or workaround information is provided in the available data. Users should monitor Citrix advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Citrix
- Date Reserved
- 2026-06-09T18:32:47.375Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aceae7c2cdf04f656b96e5d
Added to database: 10/13/2026, 22:19:40 UTC
Last enriched: 10/13/2026, 22:33:39 UTC
Last updated: 10/13/2026, 22:35:49 UTC
Views: 7
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