Vulnerability · Published Oct 13, 2026 · Assigned by Citrix
CVE-2026-84420Out-of-Bounds Write and Out-of-Bounds Read
Medium 5.8
In plain English
A medium-severity out-of-bounds read in Citrix Workspace app for Windows from Citirx. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Severity (CVSS 4.0)5.8Medium
Exploit odds (30 days)0.1%top 98.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Citirx | Citrix Workspace app for Windows | 0 – before 2603.20 CR0 – before LTSR 26070 – before LTSR 2507 CU3 |
Weakness: CWE-125 · Vector: 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