CVE-2024-6286: Citrix Workspace Privilege Escalation Flaw

CVE-2024-6286 Overview

CVE-2024-6286 is a local privilege escalation vulnerability affecting Citrix Workspace app for Windows. This security flaw allows a low-privileged user to elevate their privileges to SYSTEM level, granting complete control over the affected Windows system. The vulnerability represents a significant risk in enterprise environments where Citrix Workspace is widely deployed for remote access and virtual desktop infrastructure (VDI) solutions.

Critical Impact

Low-privileged local users can escalate to SYSTEM privileges, potentially compromising the entire Windows system and any connected enterprise resources accessible through Citrix Workspace.

Affected Products

• Citrix Workspace app for Windows versions prior to 2405
• Citrix Workspace app for Windows LTSR versions prior to 2402 CU1
• Citrix Workspace app for Windows LTSR 2203.1 through 2203.1 CU6

Discovery Timeline

• July 10, 2024 - CVE-2024-6286 published to NVD
• July 25, 2025 - Last updated in NVD database

Technical Details for CVE-2024-6286

Vulnerability Analysis

This vulnerability is classified under CWE-269 (Improper Privilege Management), indicating a fundamental flaw in how the Citrix Workspace application handles privilege separation and access control. The weakness allows authenticated local users with minimal privileges to exploit the application's trust boundaries to gain SYSTEM-level access.

The local attack vector means an attacker must first have access to the target system, either through legitimate credentials, social engineering, or another initial access technique. Once on the system, the privilege escalation can be achieved without user interaction, making it particularly dangerous in shared workstation environments or when combined with other attack vectors.

Root Cause

The root cause stems from improper privilege management (CWE-269) within the Citrix Workspace application for Windows. This type of vulnerability typically occurs when an application running with elevated privileges does not properly validate or restrict operations that can be influenced by lower-privileged users. The application may execute certain operations in a SYSTEM context while accepting input or control from unprivileged users, or it may have insecure service configurations that can be manipulated.

Attack Vector

The attack requires local access to a Windows system with a vulnerable version of Citrix Workspace installed. An attacker with a low-privileged account can exploit the improper privilege management to escalate their privileges to SYSTEM level. This could involve manipulating application components, exploiting insecure service configurations, or leveraging improper access controls on resources used by the Citrix Workspace application.

The privilege escalation mechanism allows attackers to bypass normal access controls and gain full administrative control over the affected system. From there, an attacker could access sensitive data, install persistent backdoors, move laterally within the network, or pivot to additional Citrix infrastructure.

Detection Methods for CVE-2024-6286

Indicators of Compromise

• Unexpected process creation with SYSTEM privileges originating from Citrix Workspace components
• Anomalous service behavior or modification of Citrix Workspace-related services
• Privilege escalation events in Windows Security Event logs correlated with Citrix processes
• Suspicious file system activity in Citrix Workspace installation directories

Detection Strategies

• Monitor for privilege escalation attempts using Windows Security Event Log (Event IDs 4672, 4673, 4674)
• Implement application whitelisting to detect unexpected executables running under Citrix Workspace context
• Deploy endpoint detection and response (EDR) solutions like SentinelOne to identify suspicious privilege changes
• Configure SIEM rules to alert on SYSTEM-level process creation associated with Citrix Workspace binaries

Monitoring Recommendations

• Enable verbose logging for Citrix Workspace application components
• Monitor Windows Event Logs for privilege escalation patterns
• Implement user behavior analytics to detect anomalous privilege changes
• Regularly audit installed Citrix Workspace versions across the environment

How to Mitigate CVE-2024-6286

Immediate Actions Required

• Update Citrix Workspace app for Windows to version 2405 or later immediately
• For LTSR deployments, upgrade to version 2402 CU1 or later
• Audit all Windows systems for vulnerable Citrix Workspace installations
• Implement the principle of least privilege for all user accounts

Patch Information

Citrix has released security updates to address this vulnerability. Organizations should reference the official Citrix Support Article CTX678036 for detailed patching guidance and download links for the remediated versions.

Remediated Versions:

• Citrix Workspace app for Windows 2405 and later
• Citrix Workspace app for Windows LTSR 2402 CU1 and later

Workarounds

• Restrict local access to systems running Citrix Workspace to authorized personnel only
• Implement network segmentation to limit lateral movement potential if exploitation occurs
• Enable enhanced monitoring and logging on critical systems with Citrix Workspace installed
• Consider temporary removal of Citrix Workspace from high-value assets until patching is complete

# PowerShell script to check Citrix Workspace version
Get-WmiObject -Class Win32_Product | Where-Object { $_.Name -like "*Citrix Workspace*" } | Select-Object Name, Version

# Query installed Citrix Workspace via registry
Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*" | Where-Object { $_.DisplayName -like "*Citrix Workspace*" } | Select-Object DisplayName, DisplayVersion