Citrix Workspace App up to 2602.x/LTSR 2606.x/LTSR 2506 CU3.x/Windows out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.41

Summaryinfo

A vulnerability marked as critical has been reported in Citrix Workspace App up to 2602.x/LTSR 2606.x/LTSR 2506 CU3.x/Windows. The affected element is an unknown function. The manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2026-84419. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Citrix Workspace App up to 2602.x/LTSR 2606.x/LTSR 2506 CU3.x/Windows. This issue affects an unknown code. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at support.citrix.com. The identification of this vulnerability is CVE-2026-84419 since 09/01/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/14/2026).

Upgrading to version 2603.20 CR, LTSR 2607 Hotfix 1 or LTSR 2507 CU3 Hotfix 1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Workspace App 2603.20 CR/LTSR 2607 Hotfix 1/LTSR 2507 CU3 Hotfix 1

Timelineinfo

09/01/2026 CVE reserved
10/13/2026 +42 days VulDB entry created
10/14/2026 +0 days Advisory disclosed
10/14/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: citrix.com

Advisory: support.citrix.com
Status: Confirmed

CVE: CVE-2026-84419 (🔒)
GCVE (CVE): GCVE-0-2026-84419
GCVE (VulDB): GCVE-100-418457

Entryinfo

Created: 10/14/2026 00:16
Changes: 10/14/2026 00:16 (66)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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