Citrix Workspace App Windows: Out-of-Bounds Write Before v2603.20 CR
CVE-2026-84419 Published on October 13, 2026
Out-of-Bounds Write
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.
Vulnerability Analysis
CVE-2026-84419 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2026-84419 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2026-84419
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Affected Versions
Citrix Workspace app for Windows:- Before 2603.20 CR is affected.
- Before LTSR 2607 Hotfix 1 is affected.
- Before LTSR 2507 CU3 Hotfix 1 is affected.