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CVE-2026-53566: Out-of-bounds memory read
Out-of-bounds read vulnerability in Citrix Citrix Secure Access Client for Windows.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 4.0 6.8
EPSS0.18%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Citrix Secure Access Client for Windows 0 | 26.6.1.20 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.