CVE-2025-43026
📋 TL;DR
A local privilege escalation vulnerability in HP Support Assistant allows attackers to write arbitrary files, potentially gaining elevated system privileges. This affects HP Support Assistant versions before 9.44.18.0 on Windows systems where the software is installed.
💻 Affected Systems
- HP Support Assistant
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Local attacker gains SYSTEM/administrator privileges, enabling complete system compromise, data theft, malware persistence, and lateral movement.
Likely Case
Local user with limited privileges escalates to administrator to install software, modify system settings, or access protected data.
If Mitigated
Attack fails due to proper access controls, user account restrictions, or the software being uninstalled/disabled.
🎯 Exploit Status
Requires local access to the system. The CWE-281 (Improper Preservation of Permissions) suggests improper permission handling during file operations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.44.18.0 or later
Vendor Advisory: https://support.hp.com/us-en/document/ish_12617979-12618008-16/hpsbgn04022
Restart Required: Yes
Instructions:
1. Open HP Support Assistant. 2. Check for updates in the application. 3. Install update to version 9.44.18.0 or later. 4. Restart the system.
🔧 Temporary Workarounds
Uninstall HP Support Assistant
windowsRemove the vulnerable software entirely if not needed.
Control Panel > Programs > Uninstall a program > Select HP Support Assistant > Uninstall
Disable HP Support Assistant Service
windowsStop the service to prevent exploitation while maintaining installation.
sc stop "HP Support Assistant Service"
sc config "HP Support Assistant Service" start= disabled
🧯 If You Can't Patch
- Restrict local user privileges to prevent file write operations.
- Implement application whitelisting to block unauthorized execution.
🔍 How to Verify
Check if Vulnerable:
Check HP Support Assistant version in the application or via Programs and Features in Control Panel.Check Version:
wmic product where name="HP Support Assistant" get versionVerify Fix Applied:
Confirm version is 9.44.18.0 or later in HP Support Assistant or installed programs list.📡 Detection & Monitoring
Log Indicators:
- Unusual file writes by HP Support Assistant process
- Privilege escalation attempts from non-admin users
Network Indicators:
- None - local exploitation only
SIEM Query:
EventID=4688 AND ProcessName="*HPSupportAssistant*" AND NewProcessName="*cmd*" OR NewProcessName="*powershell*"