Knowledge is power
Eliminate attack paths by gaining the insights you need.
Keeping pace with attackers is hard – especially with the constant barrage of new vulnerabilities and an ever-changing attack surface.
Since 1998, Nessus has helped security teams stay a step ahead. It provides the visibility, accuracy and speed you need to protect your organization against unacceptable risk.
This 4:30 Nessus Professional video demonstrates how you can streamline vulnerability assessments.
#1 in vulnerability assessment. Trusted by customers.
Nessus is the ultimate time saver for vulnerability scanning.
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.
Any platform
Efficiency and accuracy
Efficiency and accuracy
Dynamically compiled plugins increase scan performance and efficiency, enabling faster completion of the first scan and time to value.
IaC security scanning
Leverage IaC security scanning
Download and start scanning with Terrascan to secure your Infrastructure as Code (IaC) before deployment.
Zero in on threats
Zero in on threats that matter most
With market-leading coverage, Nessus knows every vulnerability. The power of Nessus lets you prioritize vulns by leveraging a variety of inputs, including EPSS, CVSS, and Tenable VPR to then triage and address the threats that matter most.
Pre-built templates
Pre-built policies and templates
More than 450 pre-configured templates help you quickly understand where you have vulnerabilities. Easily audit configuration compliance against CIS benchmarks and other best practices.
Customizable reporting
Customizable reporting & troubleshooting
Customizable reporting capabilities can be optimized to meet specific needs and are exportable in formats that are most suited for your security process.
Live results
Live results
Live Results automatically performs an offline vulnerability assessment with every plugin update, showing you where you may have vulnerabilities based on your scan history. From here you can easily run a scan to validate the presence of the vulnerability that accelerates accurate detection and prioritization of issues.
Ease of use
Ease of use
Nessus is designed with an intuitive approach to navigation and user experience. This includes a resource center to guide you with actionable tips and guidance on the next steps to take.
Grouped view
Grouped view
Similar issues or categories of vulnerabilities are grouped together and presented in one thread, simplifying the time to research and prioritize issues for remediation. Snoozing lets you select specific issues to disappear from view for a specified period of time. So you only focus on the issues that matter at that time.
Nessus Pro benefits
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Easy-to-deploy, easy-to-use
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A fully portable vulnerability assessment solution that can be deployed virtually anywhere. Policy creation is simple and only requires a few clicks to scan an entire corporate network.
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Advanced detection means more protection
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With 70K CVEs, the most in the industry, Nessus scans more technologies and uncovers more vulnerabilities than competing solutions.
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Cost effective for companies of all sizes
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Cost effective for any consultant or team, Nessus provides complete vulnerability scanning with unlimited assessments for one low price.
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Accurate visibility into your networks
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Nessus identifies the vulnerabilities that need attention with high-speed, accurate scanning—and highlights which vulnerabilities should be addressed first.
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The power of the Tenable Zero Day Research team
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Tenable researchers leverage extensive intel sources. Find and provide protection from the latest threats via new plugins.
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The power of Tenable grows with you
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With operability across Tenable’s product portfolio, easily migrate to other Tenable products to isolate and eradicate the priority exposures that put your business at risk—from IT infrastructure to cloud environments to OT and everywhere in between.
Tenable Nessus reviews
Tenable is the only vendor to be named a Customers’ Choice in the 2025 Gartner® Peer Insights™ Voice of the Customer for Vulnerability Assessment.
Key use cases for Nessus practitioners
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 on-demand training
Interested in learning how to use Nessus? Our on-demand course enables the student, pen tester, consultant and security practitioner, through a series of targeted videos, to develop the building blocks for effective use of the Nessus vulnerability assessment solution. From asset discovery to vulnerability assessment to compliance, participants will learn to effectively utilize Nessus in a variety of business use cases.
Course topics
60+ targeted videos and demonstrations covering these topics:
- Introduction to cybersecurity
- Installation
- Configuration
- Vulnerability assessment
- Compliance assessment
- Analysis
Nessus Pro—Built for security professionals like you
Get the world’s most widely deployed vulnerability assessment solution.
Tenable One
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