Description
Vulnerability in Citrix UniconOS leading to Persistent Command Execution

This issue affects UniconOS: before 2607.2 CR and before 2603 LTSR CU2.
Published: 2026-10-13
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Command Execution
Action: Patch
AI Analysis

Impact

This vulnerability permits an attacker to execute arbitrary commands persistently on Citrix UniconOS. The flaw allows execution of OS commands with the privileges of the affected service, potentially compromising system integrity, confidentiality, and availability. It is a command injection weakness that could lead to remote code execution, although the advisory does not explicitly state remote, and based on the advisory it is inferred that the attack may require local or privileged access.

Affected Systems

Citrix UniconOS versions before 2607.2 CR and before 2603 LTSR CU2 are vulnerable. These versions are referenced in the advisory as the affected product set.

Risk and Exploitability

The CVSS score of 6.9 indicates moderate severity while the EPSS score of less than 1% reflects a very low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. The attack vector is not explicitly disclosed, and based on the advisory text it is inferred that the exploit likely requires local or privileged access to the affected service, which limits the risk until a patch is applied.

Generated by OpenCVE AI on October 16, 2026 at 01:57 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Citrix UniconOS to version 2607.2 CR or later, or to 2603 LTSR CU2 or later.
  • Contact Citrix support or consult the advisory for additional patches or configuration changes.
  • Apply least privilege, restrict execution permissions, and monitor logs for unauthorized command execution.

Generated by OpenCVE AI on October 16, 2026 at 01:57 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
First Time appeared Citrix
Citrix uniconos
Vendors & Products Citrix
Citrix uniconos

Wed, 14 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-78

Tue, 13 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Description Vulnerability in Citrix UniconOS leading to Persistent Command Execution This issue affects UniconOS: before 2607.2 CR and before 2603 LTSR CU2.
Title Persistent Command Execution
References
Metrics cvssV4_0

{'score': 6.9, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Citrix

Published:

Updated: 2026-10-14T18:26:05.074Z

Reserved: 2026-06-09T18:32:47.375Z

Link: CVE-2026-53563

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-13T23:17:32.883

Modified: 2026-10-14T19:17:15.993

Link: CVE-2026-53563

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-26T22:39:25Z

Weaknesses
  • CWE-78

    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')