CVE intelligence

CVE-2026-53566

Vulnerability intelligence

Published Jul 14, 2026Sources checked Oct 27, 2026

6.8MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-53566 and is rated Medium severity with a CVSS score of 6.8. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Citrix Security Bulletins guidance

Vendor revision: Sep 4, 2026

Vendor remediation details

Cloud Software Group strongly urges customers of Citrix Secure Access Client for Windows and Citrix Endpoint Analysis Client to install the relevant updated versions as soon as possible:

Vendor-listed releases

Citrix Secure Access Client for Windows 26.6.1.20 and later releases
Citrix Endpoint Analysis Client for Windows 26.5.1.7 and later releases

CISA KEVNot listedBased on the latest collected catalog

EPSS0.2%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-53566?

Out-of-bounds read vulnerability in Citrix Citrix Secure Access Client for Windows.

This issue affects Citrix Secure Access Client for Windows: before 26.6.1.20.

Source: NVD