CVE-2026-84420— Out-of-Bounds Write and Out-of-Bounds Read
Quick assessment
Affected
Citirx Citrix Workspace app for Windows
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Citrix Workspace 应用存在越界读取漏洞，该漏洞影响 Windows 版本。 受影响版本为：Windows 版 Citrix Workspace 应用，低于 2603.20 CR 的版本、低于 LTSR 2607 的版本，以及低于 LTSR 2507 CU3 的版本。
Possible ATT&CK Techniques 1 AI
T1200 · Hardware Additions
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I. Basic Information for CVE-2026-84420
Vulnerability Information
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Vulnerability Title
Out-of-Bounds Write and Out-of-Bounds Read
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Citirx | Citrix Workspace app for Windows | 0 ~ 2603.20 CR | - |
|
II. Public POCs for CVE-2026-84420
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-84420 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-84420
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