Persistent Command Execution Vulnerability in Citrix UniconOS
CVE-2026-53563

6.9MEDIUM

Key Information:

Vendor

Citrix
Status
Uniconos
Vendor
CVE Published:
13 October 2026

What is CVE-2026-53563?

A persistent command execution vulnerability exists in Citrix UniconOS, which could allow an attacker to execute arbitrary commands on the affected systems. This flaw impacts UniconOS versions prior to 2607.2 CR and 2603 LTSR CU2, potentially enabling unauthorized access and control. Organizations using these affected versions should take immediate action to secure their systems and mitigate the risks associated with this vulnerability.

Affected Version(s)

UniconOS 0 < 2607.2 CR

UniconOS 0 < 2603 LTSR CU2

References

https://support.citrix.com/support-home/kbsearch/article?...

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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