Out-of-Bounds Write

Answer in brief

CVE-2026-78547 records a Unknown severity vulnerability in Out-of-Bounds Write. The current sources do not mark it as known exploited. The current feed maps Citrix/Citrix Workspace app for Windows (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Citrix/Citrix Workspace app for Windows (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Citrix/Citrix Workspace app for Windowsgeneric	>=0 <2603.11 Current Release (CR) \|\| >=0 <2507.1 LTSR CU3 \|\| >=0 <LTSR 2607	2603.11 Current Release (CR), 2507.1 LTSR CU3, LTSR 2607

Recommended response

Check inventory. Check lockfiles and deployed manifests for Citrix/Citrix Workspace app for Windows.
Review the reported fix. Update Citrix/Citrix Workspace app for Windows to 2603.11 Current Release (CR) if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

Source referencesupport.citrix.com

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.