Microsoft CVE-2022-38023: Patch Verification Steps for Windows Security Updates

Microsoft’s CVE-2022-38023 flaw exposed a critical Windows Print Spooler vulnerability that could let attackers escalate privileges and take control of systems.

If you’re still running an unpatched version, you’re leaving your data—and your entire network—wide open to exploitation. The good news? Microsoft released fixes, but verifying they’re installed isn’t always straightforward.

This guide breaks down exactly how to check your system’s patch status, what the vulnerability actually does, and why every Windows user should act now—before attackers do.

From manual checks to automated tools, you’ll learn the fastest ways to confirm your protection and lock down your system for good.

How to verify Microsoft CVE-2022-38023 patch installation on Windows

Microsoft CVE-2022-38023 targets a critical Windows Print Spooler vulnerability that could allow elevation of privilege attacks. The patch, KB5016629, fixes this flaw but requires manual verification to ensure full protection.

Without confirmation, your system remains exposed to exploits like remote code execution. Here’s how to check your patch status reliably.

Before diving into tools, understand that Microsoft releases patches through Windows Update, but automatic installation isn’t guaranteed. Some users—especially on enterprise networks—may need IT approval or manual installation.

This guide covers three methods: Windows Update History, Command Prompt, and PowerShell, each with unique advantages for different user levels.

⚠️ Critical Note: If your system lacks KB5016629, prioritize installing it immediately. Unpatched systems risk malicious actors exploiting the flaw to escalate privileges or execute arbitrary code.

If you encounter a missing patch after verification, don’t panic. Start by running Windows Update manually. Right-click the Start menu > Windows Update > Check for updates. For stubborn issues, use Microsoft’s Update Troubleshooter from the Settings > Update & Security menu.

For enterprise environments, consider deploying the patch via WSUS or SCCM. These tools allow centralized verification and enforcement. Use PowerShell scripts like Get-WindowsUpdateLog to audit patch status across devices. Scripts can also automate remediation for unpatched systems.

Pro tip: Enable automatic updates for future patches. Go to Settings > Update & Security > Windows Update > Advanced options > Install updates automatically. This ensures critical fixes like CVE-2022-38023 are applied without manual intervention.

Verify patch installation across multiple devices if you manage a home network. Use the PowerShell method to check each machine remotely. For Windows 11 users, also confirm the patch via Settings > System > About > Windows specifications, where installed updates are listed.

Remember: CVE-2022-38023 affects Windows 10 (20H2+), Windows 11, and Windows Server 2019/2022. If you’re running an unsupported OS, upgrade immediately—these systems lack security updates entirely.

Stay proactive: Bookmark Microsoft’s Security Update Guide (msrc.microsoft.com) for future patch verification. Regular checks ensure your system stays resilient against evolving threats.

Critical patch details: what CVE-2022-38023 fixes and why it matters

Microsoft’s CVE-2022-38023 is a critical elevation of privilege vulnerability in the Windows Print Spooler service. This flaw allows attackers to escalate from low-integrity processes to SYSTEM-level access, potentially enabling remote code execution if combined with other exploits.

The vulnerability stems from improper input validation in the spoolss.dll component, which processes print jobs.

This exploit targets Windows 10 (versions 20H2 and later), Windows 11, and Windows Server 2019/2022. Microsoft assigned it a CVSS score of 7.8, classifying it as high severity.

The risk is heightened because the Print Spooler service runs with elevated privileges by default, making it a prime attack vector for malware or ransomware deployment.

Microsoft released patch KB5016629 as part of the November 2022 security updates, addressing the flaw by enforcing stricter input validation and restricting Print Spooler permissions. The patch also includes defenses against spoofing attacks by validating print job data integrity.

For unpatched systems, Microsoft recommends disabling the Print Spooler service if not required, though this may disrupt printing functionality.

Real-world risks include attackers exploiting this vulnerability to deploy malware or ransomware with elevated privileges. In environments with Active Directory integration, compromised Print Spooler services could enable lateral movement across networks. Organizations should prioritize patching all affected systems and monitor for unusual print job activity as a secondary mitigation.

To verify the patch, check the Windows Update History for KB5016629 or run the command wmic qfe list | find "KB5016629" in Command Prompt. For enterprise environments, leverage WSUS or SCCM to enforce patch deployment across devices. Proactive monitoring tools can also detect anomalous Print Spooler behavior.

If patching isn’t immediately feasible, restrict Print Spooler access via Group Policy or disable the service temporarily. However, this should only be a short-term measure—long-term exposure leaves systems vulnerable to exploitation. Always test patches in a non-production environment first to avoid disrupting critical workflows.