All vulnerabilities
CVE-2026-53563

UniconOS: Persistent Command Execution

Citrix UniconOSNetwork & edge
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.21%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in2607.2 CRAlso 2603 LTSR CU2CVE List
Published13 Oct 2026Updated 14 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Vulnerability in Citrix UniconOS leading to Persistent Command Execution

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

Text from CVE List

Affected versions 2

  • UniconOSaffected: all versions before 2607.2 CRCVE List
  • UniconOSaffected: all versions before 2603 LTSR CU2CVE List

References 1