---
id: CVE-2026-53563
title: |-
  Vulnerability in Citrix UniconOS leading to Persistent Command Execution

  This issue affects UniconOS: before 2607.2 CR and before 2603 LTSR CU2.
summary: |-
  Vulnerability in Citrix UniconOS leading to Persistent Command Execution

  This issue affects UniconOS: before 2607.2 CR and before 2603 LTSR CU2.
severity: medium
cwe:
  - CWE-78
published: '2026-10-13'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T19:17:15.993'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53563'
references:
  - url: >-
      https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697187
    label: secure@citrix.com
tags:
  - nvd
  - cve.org
epss: 0.0026
epssPercentile: 0.1766
ingestedAt: '2026-10-14T00:07:19.219Z'
vendor: Citrix
product: UniconOS
affected:
  - UniconOS < 2607.2 CR
  - UniconOS < 2603 LTSR CU2
cvss: 6.9
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-14T18:25:44.402509Z'
cvssSource: cna
---

## Overview

Vulnerability in Citrix UniconOS leading to Persistent Command Execution

This issue affects UniconOS: before 2607.2 CR and before 2603 LTSR CU2.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.