CVE-2022-50914: EaseUS Data Recovery Privilege Escalation

CVE-2022-50914 Overview

CVE-2022-50914 is an unquoted service path vulnerability affecting EaseUS Data Recovery 15.1.0.0. The vulnerability exists in the EaseUS UPDATE SERVICE executable, where the service path is not properly enclosed in quotes. This allows attackers with local access to exploit the unquoted path by injecting and executing malicious code with elevated LocalSystem privileges.

Unquoted service path vulnerabilities (CWE-428) occur when Windows services are configured with executable paths containing spaces that are not enclosed in quotation marks. Windows interprets these paths ambiguously, attempting to execute binaries at various path truncation points. This behavior can be exploited by placing a malicious executable in a location that Windows will attempt to run before the legitimate service binary.

Critical Impact

Successful exploitation enables attackers to achieve privilege escalation to LocalSystem, the highest privilege level on Windows systems, potentially leading to complete system compromise.

Affected Products

• EaseUS Data Recovery 15.1.0.0
• EaseUS UPDATE SERVICE component

Discovery Timeline

• 2026-01-13 - CVE CVE-2022-50914 published to NVD
• 2026-01-13 - Last updated in NVD database

Technical Details for CVE-2022-50914

Vulnerability Analysis

This vulnerability is classified under CWE-428 (Unquoted Search Path or Element). The EaseUS UPDATE SERVICE is configured with an unquoted service path that contains spaces. When Windows attempts to start the service, it parses the path from left to right, attempting to execute binaries at each space boundary before continuing to the full path.

The local attack vector requires an attacker to have existing access to the target system. However, once exploited, the vulnerability grants execution with LocalSystem privileges, which provides complete control over the affected Windows system. The exploitation does not require user interaction, making it a reliable privilege escalation mechanism once initial access is obtained.

Root Cause

The root cause of CVE-2022-50914 is improper quoting of the service executable path during the EaseUS Data Recovery installation process. When the EaseUS UPDATE SERVICE is registered with Windows Service Control Manager, the ImagePath registry value is set without enclosing quotation marks around a path that contains spaces.

For example, a path like C:\Program Files\EaseUS\Update Service\ENSServer.exe without quotes will cause Windows to attempt execution in the following order:

1. C:\Program.exe
2. C:\Program Files\EaseUS\Update.exe
3. C:\Program Files\EaseUS\Update Service\ENSServer.exe

Attack Vector

The attack requires local access to the target system with sufficient permissions to write to one of the parent directories in the service path. An attacker can exploit this vulnerability by:

1. Identifying the unquoted service path in the Windows registry
2. Creating a malicious executable named to match a path truncation point (e.g., Update.exe)
3. Placing the malicious executable in a writable parent directory
4. Waiting for the service to restart (or triggering a restart)
5. The malicious code executes with LocalSystem privileges

The vulnerability is documented in Exploit-DB #50886, which provides additional technical details about the exploitation mechanism.

Detection Methods for CVE-2022-50914

Indicators of Compromise

• Presence of unexpected executables in C:\Program Files\EaseUS\ directory with names like Update.exe or Program.exe
• Unusual process execution chains where suspicious binaries spawn with SYSTEM privileges
• Registry modifications to the EaseUS UPDATE SERVICE ImagePath value
• Suspicious file creation events in directories along the EaseUS installation path

Detection Strategies

• Query Windows services for unquoted paths using PowerShell: Get-WmiObject win32_service | Where-Object {$_.PathName -notlike '"*"' -and $_.PathName -like '* *'}
• Monitor for new executable files created in C:\Program Files\ or C:\Program Files\EaseUS\ directories
• Implement file integrity monitoring on directories within the EaseUS installation path
• Audit service configuration changes in the Windows registry under HKLM\SYSTEM\CurrentControlSet\Services\

Monitoring Recommendations

• Enable Windows Security Event logging for service installation and modification events (Event IDs 4697, 7045)
• Configure endpoint detection rules to alert on processes spawning from unexpected locations with SYSTEM privileges
• Monitor process creation events for executables running from truncated path locations
• Implement SentinelOne behavioral AI to detect anomalous service execution patterns indicative of unquoted service path exploitation

How to Mitigate CVE-2022-50914

Immediate Actions Required

• Audit the EaseUS UPDATE SERVICE registry entry and manually add quotation marks around the ImagePath value
• Check for any suspicious executables in parent directories of the EaseUS installation path and remove them
• Restrict write permissions on directories along the service path to prevent unauthorized file placement
• Consider disabling the EaseUS UPDATE SERVICE if automatic updates are not required

Patch Information

There is no vendor patch information available in the CVE data. Users should check the EaseUS Official Website for security updates and newer versions that may address this vulnerability. Additional technical details can be found in the VulnCheck Advisory on EaseUS.

Workarounds

• Manually quote the service path by modifying the registry key: Navigate to HKLM\SYSTEM\CurrentControlSet\Services\ENSServer and update the ImagePath value to include quotation marks around the full path
• Remove write permissions for standard users on C:\Program Files\EaseUS\ and parent directories
• Implement application whitelisting to prevent unauthorized executables from running in the EaseUS installation directories
• Consider uninstalling EaseUS Data Recovery if it is not actively needed and no patch is available

# Registry fix example (run as Administrator in PowerShell)
# First, verify the current unquoted path:
Get-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\ENSServer" -Name ImagePath

# Then apply quotation marks to the service path:
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\ENSServer" -Name ImagePath -Value '"C:\Program Files\EaseUS\Update Service\ENSServer.exe"'