Medium severity · published Oct 13, 2026
CVE-2026-53563
Persistent Command Execution
6.9
CVSS
0.3%
EPSS
No
On KEV
Description
Vulnerability in Citrix UniconOS leading to Persistent Command Execution
This issue affects UniconOS: before 2607.2 CR and before 2603 LTSR CU2.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UN
UniconOS · Citrix
before 2607.2 CR; before 2603 LTSR CU2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53563
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-53563
support.citrix.com
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697187
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