Out-of-bounds read in Secure Access Client for Windows - CVE-2026-53566
Published: July 15, 2026
Vulnerability identifier: #VU137690
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53566
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Citrix
Affected software:
Secure Access Client for Windows
Secure Access Client for Windows
Detailed vulnerability description
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to out-of-bounds read in Citrix Secure Access Client for Windows when processing memory on a local system. A local user can trigger the out-of-bounds read to disclose sensitive information.
Exploitation requires standard user access on the local system, and the DNE driver must not be installed.
How to mitigate CVE-2026-53566
Install security update from vendor's website.