CVE-2022-30206
📋 TL;DR
This vulnerability allows attackers to gain SYSTEM-level privileges on Windows systems by exploiting the Print Spooler service. It affects Windows servers and workstations where the Print Spooler service is enabled. Attackers need local access to exploit this vulnerability.
💻 Affected Systems
- Microsoft Windows
📦 What is this software?
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 10 by Microsoft
Windows 11 by Microsoft
Windows 11 by Microsoft
Windows 7 by Microsoft
Windows 7 by Microsoft
Windows 8.1 by Microsoft
Windows 8.1 by Microsoft
Windows Rt 8.1 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with SYSTEM privileges, enabling installation of malware, credential theft, and lateral movement across the network.
Likely Case
Local privilege escalation allowing attackers to bypass security controls, install persistent backdoors, and access sensitive system resources.
If Mitigated
Limited impact if Print Spooler is disabled or proper access controls restrict local user privileges.
🎯 Exploit Status
Exploitation requires local access with standard user privileges. Multiple Print Spooler vulnerabilities have been actively exploited in the wild.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: July 2022 security updates (KB5015807, KB5015808, etc.)
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-30206
Restart Required: Yes
Instructions:
1. Apply July 2022 Windows security updates from Windows Update. 2. For enterprise environments, deploy patches through WSUS or SCCM. 3. Restart affected systems after patching.
🔧 Temporary Workarounds
Disable Print Spooler Service
windowsStops the vulnerable service entirely, preventing exploitation but disabling printing functionality.
sc stop spooler
sc config spooler start= disabled
Restrict Spooler Directory Permissions
windowsModify permissions on the spool directory to prevent unauthorized access.
icacls C:\Windows\System32\spool\PRINTERS /deny "Users:(OI)(CI)(M)"
🧯 If You Can't Patch
- Disable Print Spooler service on non-essential systems
- Implement strict access controls and monitor for privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check if Print Spooler service is running and system lacks July 2022 security updates.Check Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify July 2022 security updates are installed via 'systeminfo' or Windows Update history.📡 Detection & Monitoring
Log Indicators:
- Event ID 7036 (service state changes) for Print Spooler
- Unexpected privilege escalation events in Security logs
- Suspicious process creation from spoolsv.exe
Network Indicators:
- Unusual RPC calls to Print Spooler service
- SMB connections to print shares from unexpected sources
SIEM Query:
EventID=7036 AND ServiceName="Spooler" AND (State="running" OR State="stopped")