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Tenable
Nessus®

The first tool in your cybersecurity toolbox

Expose and close weaknesses across your constantly changing attack surface with the industry’s most trusted vulnerability assessment solution.

Try Tenable Nessus free for 7 days

Unlimited vulnerability assessments you can use anywhere

Know your vulnerabilities

Automate point-in-time assessments to identify software flaws, missing patches, malware and misconfigurations across a variety of operating systems, devices and applications.

Expose the threats that matter

Nessus provides a variety of vulnerability scoring systems like CVSS v4, EPSS and Tenable’s VPR to help you implement effective vulnerability prioritization for remediation efforts.

Close knowledge gaps

Get actionable tips and tricks on the next steps to take with a resource center that can guide experienced and non-security staff.

The global gold standard in vulnerability assessment

Nessus Professional

  • Unlimited IT vulnerability assessments
  • Vulnerability scoring with CVSS v4, EPSS and VPR (for Top 10 Vulns)
  • Configuration, compliance and security audits
  • Use anywhere
  • Configurable reports
  • Community support
  • Advanced support (available as an option)
  • On-demand training (available as an option)
  • Web application scans (5 FQDNs with the option to add more)
  • External attack surface scans
  • Cloud infrastructure scans

Nessus Expert


Tenable Nessus ranks at the top

#1

in accuracy

Nessus has the industry's lowest false positive rate with six-sigma accuracy.

*.32 defects per 1 million scans

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#1

in coverage

Nessus has the deepest and broadest vulnerability coverage in the industry.

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#1

in adoption

Nessus is trusted by tens of thousands of organizations, with 2 million downloads worldwide.

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#1

in hearts and minds

Don't just take our word for it. Security practitioners around the world put their trust in Nessus.

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Nessus is #1 For Vulnerability Assessment

From the beginning, we've worked hand-in-hand with the security community. We continuously optimize Nessus based on community feedback to make it the most accurate and comprehensive vulnerability assessment solution in the market. Twenty-five years later and we're still laser focused on community collaboration and product innovation to provide the most accurate and complete vulnerability data — so you don't miss critical issues which could put your organization at risk.

Today, Nessus is trusted by tens of thousands of organizations worldwide as one of the most widely deployed security technologies on the planet — and the gold standard for vulnerability assessment. See for yourself - explore the product here.

91K+

CVEs

221,000+

plugins

100+

new plugins
released weekly

Tenable’s Zero Day Research provides 24/7 updates into new and emergent vulnerabilities so you’ll always have full situational awareness.


Built by practitioners

Nessus is built from the ground-up with a deep understanding of how security practitioners work. Every feature in Nessus is designed to make vulnerability assessment simple, easy and intuitive. The result: less time and effort to assess, prioritize and remediate issues. Learn more about the features here.

  • Deploy on any platform

    You can deploy Nessus on a variety of platforms, including Raspberry Pi. Nessus is there with you, no matter where you are, where you’re headed or how distributed your environment is.

    Read the press release

  • Efficiency and accuracy

    Our dynamically compiled plugins increase scan performance and efficiency, so you can complete the first scan quickly and improve time to value.
  • Zero in on threats that matter most

    With market-leading coverage, Nessus knows every vulnerability. The power of Nessus lets you triage and address the threats that matter most.
  • Pre-built policies and templates

    With more than 450 pre-configured templates, Nessus helps you quickly understand where you have vulnerabilities.
  • Customizable reporting & troubleshooting

    Nessus helps you optimize reports to meet your needs. Plus, you can export them in formats that work for your security process.
  • Live results

    Nessus Live Results automatically performs offline vulnerability assessments with every plugin update. You’ll see where your vulnerabilities are based on your scan history.
  • Ease of use

    Nessus takes an intuitive approach to navigation and user experience. And with our resource center, you’ll be armed with actionable tips and guidance on the next steps to take.
  • Grouped view

    Nessus groups similar issues and vulnerability categories together and presents them in one thread, which simplifies researching and prioritizing issues for remediation.

Key use cases for Nessus

Nessus is the world’s No. 1 vulnerability scanning solution. Learn how Tenable customers put it to work in a range of critical situations.

Network pen tester persona
Network pen testers play a unique role in the IT security ecosystem.

Before executing full breach simulations, pen testers use Nessus first to find where those major vulnerabilities are hiding.

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Cybersecurity education programs faculty and students persona
Cybersecurity students are invaluable to this highly specialized field.

Professors use Nessus with cybersecurity students in vulnerability assessment and management courses as a foundational tool to get them up to speed on the essentials of uncovering vulnerabilities.

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Consultant persona
Cybersecurity consultants play pivotal roles in a constantly shifting threat and vulnerability landscape.

Cybersecurity consultants use Nessus to scour clients’ networks for vulnerabilities and create comprehensive reports that summarize security posture and contain key suggestions for remediation.

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SMB Security Admin persona
In years past, small and medium-sized businesses might have considered themselves effectively immune to cyberattacks.

With Nessus, even small companies that lack full-time cybersecurity staff can stay on top of vulnerabilities, customizing comprehensive scans to meet unique business needs.

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To learn more about Nessus features and functionality, visit our Nessus documentation page.
To learn more about purchasing options, please contact your preferred reseller or visit our online store.

Nessus Expert—
Built for security professionals like you

Get the world’s most widely deployed vulnerability assessment solution.

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Customers rely on Nessus to stay safe

  • American Eagle Outfitters

  • Virtustream

  • World Wide Technology

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