CVE-2021-27192
📋 TL;DR
This CVE describes a local privilege escalation vulnerability in Netop Vision Pro Windows clients. It allows a local user with standard privileges to gain administrator-level access on the system. Organizations using Netop Vision Pro for distance learning or classroom management are affected.
💻 Affected Systems
- Netop Vision Pro
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker with local access could gain full administrator control over the Windows system, potentially installing malware, stealing sensitive data, or disrupting operations.
Likely Case
A malicious local user or compromised standard account could elevate privileges to install unauthorized software, modify system settings, or access restricted data.
If Mitigated
With proper access controls and monitoring, impact is limited to isolated systems with minimal lateral movement potential.
🎯 Exploit Status
Exploitation requires local access to the system but is relatively straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 9.7.2 or later
Vendor Advisory: https://www.netop.com/support/security-advisories.htm
Restart Required: Yes
Instructions:
1. Download Netop Vision Pro version 9.7.2 or later from Netop's official website. 2. Run the installer with administrative privileges. 3. Follow the installation wizard. 4. Restart the system when prompted.
🔧 Temporary Workarounds
Restrict Local Access
windowsLimit physical and remote local access to systems running Netop Vision Pro to trusted users only.
Disable or Remove Netop Vision Pro
windowsIf the software is not essential, uninstall it from affected systems.
Control Panel > Programs > Uninstall a program > Select Netop Vision Pro > Uninstall
🧯 If You Can't Patch
- Implement strict least privilege access controls to limit who can log into affected systems locally.
- Enable detailed auditing and monitoring for privilege escalation attempts on systems running vulnerable versions.
🔍 How to Verify
Check if Vulnerable:
Check Netop Vision Pro version in Control Panel > Programs > Programs and Features. If version is 9.7.1 or earlier, the system is vulnerable.Check Version:
wmic product where name="Netop Vision Pro" get versionVerify Fix Applied:
After updating, verify the version is 9.7.2 or later in Control Panel > Programs > Programs and Features.📡 Detection & Monitoring
Log Indicators:
- Windows Event Logs showing unexpected privilege escalation, particularly from standard to administrator accounts
- Netop Vision Pro service logs showing abnormal behavior
Network Indicators:
- Unusual outbound connections from affected systems post-exploitation
SIEM Query:
EventID=4688 AND NewProcessName LIKE '%netop%' AND SubjectUserName!=SYSTEM AND TokenElevationType!=%%1936