Tenable vs Microsoft Defender Vulnerability Management -- Vulnerability Management Compared

Tenable vs Microsoft Defender Vulnerability Management

Microsoft Defender Vulnerability Management appeals to Microsoft-centric organizations as it is included with Defender for Endpoint P2, requiring no additional licensing or deployment. However, it provides significantly narrower vulnerability coverage compared to Tenable, focusing primarily on endpoint operating systems and browsers rather than the full IT, cloud, and OT estate that Tenable covers. For organizations deeply invested in Microsoft 365 E5, Defender VM is a cost-effective starting point, but enterprises with diverse environments will need Tenable's breadth.

The Verdict

Choose Microsoft Defender Vulnerability Management if you are a Microsoft 365 E5 organization wanting vulnerability visibility at no additional cost with native Intune remediation. Choose Tenable if you need comprehensive vulnerability management across heterogeneous environments, deeper vulnerability checks, and coverage beyond managed endpoints.

Feature-by-Feature Comparison

FeatureMicrosoft Defender Vulnerability ManagementTenable
Licensing CostIncluded with Defender P2Separate per-asset licensing
Vulnerability CoverageOS and browser focused200,000+ plugins across all asset types
Asset ScopeManaged endpoints onlyIT, cloud, OT, containers, web apps
Remediation IntegrationNative Intune integrationThird-party ITSM integration
OT/ICS ScanningNot supportedTenable.ot dedicated OT scanning
Compliance ScanningSecurity baselines onlyCIS, DISA STIG, PCI DSS benchmarks
Cross-Platform DepthStrong Windows, basic Linux/macOSDeep multi-platform coverage
Deployment EffortZero (uses Defender agent)Requires scanner/agent deployment

When to Choose Each Tool

Choose Microsoft Defender Vulnerability Management when:

  • +Your organization is heavily invested in the Microsoft 365 E5 ecosystem
  • +You want vulnerability management at no additional cost with Defender P2
  • +You need deep Intune integration for automated patch remediation
  • +Your environment is primarily Windows and Microsoft-managed endpoints
  • +You want a unified security dashboard across Microsoft 365 Defender

Choose Tenable when:

  • +You need comprehensive vulnerability scanning across heterogeneous environments
  • +OT/ICS, network device, and custom application scanning is required
  • +You want the industry's deepest vulnerability check library (200K+ plugins)
  • +Your environment includes significant Linux, cloud-native, or container workloads
  • +You need advanced compliance scanning for CIS, DISA STIG, and PCI DSS

Pros & Cons Comparison

Microsoft Defender Vulnerability Management

Pros

  • +Included with Microsoft Defender for Endpoint P2 at no additional cost
  • +Zero deployment effort for existing Microsoft Defender environments
  • +Deep integration with Intune for automated remediation
  • +Security baseline assessment beyond just CVE detection
  • +Unified security dashboard across Microsoft 365 Defender

Cons

  • Limited vulnerability coverage compared to dedicated scanners like Nessus
  • Primarily focused on Microsoft OS and browser ecosystems
  • No support for OT/ICS, network appliance, or custom application scanning
  • Requires Microsoft 365 E5 or Defender P2 licensing
  • Less effective in heterogeneous non-Microsoft environments

Tenable

Pros

  • +Largest vulnerability plugin library with rapid CVE coverage
  • +Mature platform with 20+ years of vulnerability research
  • +Flexible deployment options including cloud, on-prem, and hybrid
  • +Strong compliance scanning for CIS, DISA STIG, and PCI DSS
  • +Extensive third-party integrations and robust API

Cons

  • Per-asset pricing becomes expensive at enterprise scale
  • Nessus scanning can be resource-intensive on networks
  • Steep learning curve for Tenable.sc administration
  • Agent-based scanning requires endpoint deployment overhead
  • Reporting customization is limited without Tenable.sc

Tenable vs Microsoft Defender Vulnerability Management FAQ

Common questions about choosing between Tenable and Microsoft Defender Vulnerability Management.

What is the main difference between Tenable and Microsoft Defender Vulnerability Management?

Microsoft Defender Vulnerability Management appeals to Microsoft-centric organizations as it is included with Defender for Endpoint P2, requiring no additional licensing or deployment. However, it provides significantly narrower vulnerability coverage compared to Tenable, focusing primarily on endpoint operating systems and browsers rather than the full IT, cloud, and OT estate that Tenable covers. For organizations deeply invested in Microsoft 365 E5, Defender VM is a cost-effective starting point, but enterprises with diverse environments will need Tenable's breadth.

Is Microsoft Defender Vulnerability Management better than Tenable?

Choose Microsoft Defender Vulnerability Management if you are a Microsoft 365 E5 organization wanting vulnerability visibility at no additional cost with native Intune remediation. Choose Tenable if you need comprehensive vulnerability management across heterogeneous environments, deeper vulnerability checks, and coverage beyond managed endpoints.

How much does Microsoft Defender Vulnerability Management cost compared to Tenable?

Microsoft Defender Vulnerability Management pricing: Included with Microsoft Defender for Endpoint P2 / Standalone add-on $3/user/month. Tenable pricing: Nessus Professional from $3,990/year / Tenable.io from $2,275/year (65 assets) / Enterprise custom pricing. Microsoft Defender Vulnerability Management's pricing model is per-user (monthly subscription, bundled with microsoft 365 e5), while Tenable uses per-asset (annual subscription) pricing.

Can I migrate from Tenable to Microsoft Defender Vulnerability Management?

Yes, you can migrate from Tenable to Microsoft Defender Vulnerability Management. The migration process depends on your specific setup and the features you use. Both platforms offer APIs that can facilitate automated migration. Consider running both tools in parallel during the transition to ensure zero downtime.

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