CVE-2026-84419

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Out-of-Bounds Write in Citrix Workspace App for Windows

Publication date: 2026-10-13

Last updated on: 2026-10-15

Assigner: Citrix Systems, Inc.

Description

Out-of-bounds write vulnerability in Citrix Workspace app for Windows. This issue affects Workspace app for Windows: before 2603.20 CR, before LTSR 2607 Hotfix 1, and before LTSR 2507 CU3 Hotfix 1.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-15

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-84419

EUVD

EUVD-2026-100751

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds write vulnerability in Citrix Workspace app for Windows. It allows an attacker with local access to write data beyond allocated memory bounds, potentially leading to code execution or system crashes.

Impact Analysis

An attacker could exploit this to execute arbitrary code, escalate privileges, or cause denial-of-service conditions on affected systems. Users with local access could trigger this vulnerability.

Mitigation Strategies

Update Citrix Workspace app for Windows to version 2603.20 CR or later, LTSR 2607 Hotfix 1, or LTSR 2507 CU3 Hotfix 1 to address the out-of-bounds write vulnerability.

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