CVE-2026-84420

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Out-of-bounds Read in Citrix Workspace App for Windows

Publication date: 2026-10-13

Last updated on: 2026-10-14

Assigner: Citrix Systems, Inc.

Description

Out-of-bounds read vulnerability in Citirx Citrix Workspace app for Windows. This issue affects Citrix Workspace app for Windows: before 2603.20 CR, before LTSR 2607, and before LTSR 2507 CU3.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-14

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-84420

EUVD

EUVD-2026-100752

Affected Vendors & Products

Vendor	Product	Version / Range
Citirx	Citrix	Workspace app for Windows 0
Citirx	Citrix	Workspace app for Windows 0
Citirx	Citrix	Workspace app for Windows 0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds read vulnerability in Citrix Workspace app for Windows. It allows an attacker with local access to read memory outside the intended buffer, potentially exposing sensitive data.

Impact Analysis

An attacker could exploit this to access sensitive information on your system. It requires local access but could lead to data leaks or further system compromise if combined with other vulnerabilities.

Compliance Impact

This vulnerability could lead to unauthorized data access, potentially violating GDPR (data protection) or HIPAA (health data privacy) if sensitive information is exposed. Organizations must patch to maintain compliance.

Mitigation Strategies

Update Citrix Workspace app for Windows to version 2603.20 CR or later, 2607 LTSR, or 2507 CU3 LTSR to address the out-of-bounds read vulnerability.

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