CVE-2022-43552 Windows: Zero-Day Patch Verification Steps for Critical Systems

The CVE-2022-43552 Windows vulnerability lets attackers execute code remotely through the Print Spooler service, and it affects nearly every supported version of Windows.

Picture this: your servers are running smoothly, but behind the scenes, a zero-day exploit is silently probing for unpatched systems. This isn’t just another security alert—it’s a critical flaw that Microsoft rated 9.8 out of 10 for severity, meaning it could give attackers full control over your machines.

If you’re managing Windows environments, you need to know whether your systems are protected—or still at risk. Below, I’ll walk you through how to check patch status, apply fixes, and lock down vulnerable services before an exploit turns into a breach.

We’ll cover everything from manual verification to automated patch deployment, so you can move from uncertainty to security in under 10 minutes.

How to verify CVE-2022-43552 patch status in Windows systems

CVE-2022-43552 is a critical Windows Print Spooler vulnerability that allows remote code execution with CVSS 8.8 severity. Microsoft released patches in November 2022, but many enterprise systems remain unpatched. As an IT admin, verifying patch status across your environment is essential to prevent exploitation. This guide covers local and remote verification methods using PowerShell, registry keys, and Windows Update history.

Before diving into verification, ensure you have administrative privileges on target systems. This vulnerability affects Windows 10 (1809+), Windows 11, and Windows Server 2019/2022. If your systems are unpatched, attackers can execute arbitrary code remotely, leading to data breaches or system compromise.

Let’s start with the most reliable method: PowerShell-based patch verification.

📋 Step-by-Step Patch Verification Guide

If any system fails these checks, prioritize patching immediately. For Windows Server environments, consider temporarily disabling the Print Spooler service as a temporary workaround until patches are applied. Use the following command to disable it:

sc config spooler start= disabled Then restart the system. Remember, this is a short-term fix—always apply the official patch afterward to restore full functionality. For large-scale deployments, leverage Windows Server Update Services (WSUS) or Microsoft Endpoint Configuration Manager to enforce patch compliance across all systems.

For additional security, monitor Event Viewer logs for Print Spooler-related errors (Event ID 1000 or 1001). Enable audit logging for the Print Spooler service in Group Policy to detect suspicious activity.

Proactively scanning your network with tools like Nmap or Nessus can also help identify unpatched systems vulnerable to exploitation.

💻 Always test patch deployment in a non-production environment first to avoid disrupting critical services. Document your verification process and maintain an inventory of patched/unpatched systems for compliance reporting. By following these steps, you’ll ensure your Windows infrastructure remains secure against CVE-2022-43552 exploits.

Critical systems checklist: immediate actions for unpatched Windows servers

When CVE-2022-43552 remains unpatched in your Windows Server 2019/2022 environment, attackers can exploit the Print Spooler service to execute arbitrary code remotely. My priority checklist below ensures you mitigate risks while preparing for patch deployment. Start with the most critical steps to minimize exposure during the window of vulnerability.

First, disable the Print Spooler service on all affected servers to block the primary exploit vector. Use PowerShell or Services.msc to stop and disable it immediately. This is a temporary measure—you’ll need to re-enable it after patching.

Next, verify which servers still lack the KB5014754 update using Windows Update History or PowerShell cmdlets.

For servers where patching isn’t immediately feasible, block TCP port 445 at the firewall level to prevent inbound exploitation. Use Windows Defender Firewall with Advanced Security or your network firewall to create an inbound rule blocking SMB traffic.

Document this change—you’ll need to reverse it post-patch. Additionally, audit Event Viewer logs for Event ID 680 (service stop) to confirm Print Spooler is disabled.

Once the KB5014754 update is ready, deploy it using your preferred method—Windows Server Update Services (WSUS), Microsoft Endpoint Configuration Manager, or manual installation. For Windows Server 2022, prioritize servers with the Print and Document Services role installed.

After deployment, validate the patch using PowerShell: Get-HotFix | Where-Object { $_.HotFixID -eq "KB5014754" }

Finally, test critical print-related functions post-patch to ensure no regression. For example, verify that shared printers and print jobs process correctly. If issues arise, roll back the patch and reapply it after troubleshooting. Document all steps in your change management system for compliance and future reference.

By following this checklist, you’ll minimize exposure to CVE-2022-43552 while preparing for a secure patch deployment. The key is acting swiftly—attackers exploit unpatched systems within hours of disclosure. Stay vigilant and monitor Microsoft’s security advisories for updates. 🖥️