---
id: CVE-2026-78547
title: >-
  Out-of-bounds write vulnerability in Citrix Citrix Workspace app for Windows.


  This issue affects Citrix Workspace app for Windows: before 2603.11 Current
  Release (CR), before 2507.1 LTSR CU3, and before LTSR 2607.
summary: >-
  Out-of-bounds write vulnerability in Citrix Citrix Workspace app for Windows.


  This issue affects Citrix Workspace app for Windows: before 2603.11 Current
  Release (CR), before 2507.1 LTSR CU3, and before LTSR 2607.
severity: medium
cvss: 4.4
cvssVector: 'CVSS:4.0/AV:P/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-787
vendor: Citrix
product: Citrix Workspace app for Windows
affected:
  - workspace_app_for_windows < 2603.11 Current Release (CR)
  - workspace_app_for_windows < 2507.1 LTSR CU3
  - workspace_app_for_windows < LTSR 2607
published: '2026-09-11'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T19:16:15.097'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78547'
references:
  - url: >-
      https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697034&articleTitle=Citrix_Workspace_app_for_Windows_Security_Bulletin_CVE_2026_78546_and_CVE_2026_78547
    label: secure@citrix.com
tags:
  - nvd
  - cve.org
epss: 0.00147
epssPercentile: 0.03259
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-11T19:34:11.126522Z'
cvssSource: cna
ingestedAt: '2026-09-14T00:35:28.533Z'
---

## Overview

Out-of-bounds write vulnerability in Citrix Citrix Workspace app for Windows.

This issue affects Citrix Workspace app for Windows: before 2603.11 Current Release (CR), before 2507.1 LTSR CU3, and before LTSR 2607.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.