How to Verify Vulnerabilities Are Remediated (Post-Patch Validation)

Key Points
Introduction: Highlights why simply deploying patches is not enough and why you must confirm that vulnerabilities are actually cleared from your environment.
Post Patch Vulnerability Verification: Explains how Vulnerability Manager Plus uses unified patch and vulnerability scans, along with reports, to confirm that previously detected vulnerabilities are remediated.
Quick Setup: Provides step by step console configuration to enable continuous patch and vulnerability scanning and schedule scan based reports for post patch validation.

Introduction

Deploying patches without confirming their effect can leave a false sense of security. A patch might fail to install, require a reboot, or not cover all affected systems, leaving the underlying vulnerabilities active.

Vulnerability Manager Plus helps you close this gap by running unified patch and vulnerability scans after patching and presenting up to date scan data and reports. With the right setup, you can quickly verify whether vulnerabilities have been remediated across all managed endpoints.

Post Patch Vulnerability Verification

Post patch vulnerability verification is the process of confirming that vulnerabilities identified in earlier scans are no longer present after patches are deployed.

In Vulnerability Manager Plus, verification is achieved by:

Unified patch and vulnerability scanning

Patch scans and vulnerability scans are performed together. When a patch scan runs, the system also checks for vulnerabilities, misconfigurations, and missing patches. This unified scan is triggered automatically after events such as:

• Vulnerability database synchronization
• Patch installation
• Required system reboot
• Manual scans initiated through the console
• Agent installation when patch scanning is enabled

These automatic scans ensure updated post patch results without requiring manual scheduling.

Scan validation

Admins can check the Scan Systems view to confirm whether a post patch scan has completed and whether the vulnerability state has changed. This is essential when validating whether specific vulnerabilities have been closed.

Verification through reports

Predefined patch reports show the number of systems where patches are missing, installed, or applicable. Executive reports summarize exposure and compliance posture, helping validate whether remediation is progressing across all endpoints.

Quick Setup

Follow these steps to configure Vulnerability Manager Plus so you can accurately verify whether vulnerabilities are remediated after patch deployment.

Step 1: Ensure vulnerability database synchronization is active

1. Open Admin → Patch Settings → Patch Database Settings.
2. Verify that scheduled vulnerability database sync is enabled.
3. When the database sync completes, VMP automatically performs a patch scan that refreshes vulnerability data used for post patch validation.

Step 2: Confirm agents are installed and patch scanning is enabled

1. Navigate to Admin → Agent Settings → General Settings.
2. Ensure Perform Patch Scanning is enabled for newly installed agents.
3. Deploy agents to all endpoints that should participate in verification.

This ensures devices automatically contribute updated scan results after patching.

Step 3: Validate that unified scans run after patching

1. Navigate to Systems → Scan Systems.
2. Check each system's Last Scan Time to confirm scans have occurred after patch deployment and any required reboot.
3. If instant verification is needed, initiate Scan Now to trigger an immediate unified scan.

This ensures the console displays the most recent post patch vulnerability status.

Step 4: Use automatic unified scanning for verification

Unified scans run automatically during:

• Vulnerability database sync
• Patch installation
• Required reboots
• Manual scan events
• Agent installation with scanning enabled

These automatic triggers provide built in verification without requiring additional schedules.

Step 5: Enable reports to confirm vulnerabilities are remediated

1. Open Reports → Schedule Reports.
2. Create scheduled scan based reports showing missing, applicable, and installed patches.
3. Schedule them to run after patch deployment windows so they include the latest post patch scan data.
4. Use Executive Reports and Predefined Patch Reports to confirm that systems transition from missing to installed state, indicating successful remediation.

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