Knowledge is power
As the attack surface evolves, you need a vulnerability assessment solution that goes beyond just your traditional IT assets. With Nessus Expert, you can also secure your web applications and gain visibility into your attack surface. Trust the #1 vulnerability assessment solution for peace of mind in a constantly changing security world. Trust Nessus.
Vulnerability assessment for the modern attack surface. Do more with Nessus Expert.
#1 in vulnerability assessment. Trusted by customers.
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.
Web application scanning
Web application scanning
Safely scan web applications to accurately identify vulnerabilities in custom application code and third party components.
Gain visibility
Gain visibility into your internet-facing attack surface
You can't protect what you can't see. Find and assess internet-connected assets before they find you.
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 Expert benefits
-
Easy-to-deploy, easy-to-use
-
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.
-
Advanced detection means more protection
-
With 70K CVEs, the most in the industry, Nessus scans more technologies and uncovers more vulnerabilities than competing solutions.
-
Cost effective for companies of all sizes
-
Cost effective for any consultant or team, Nessus provides complete vulnerability scanning with unlimited assessments for one low price.
-
Accurate visibility into your networks
-
Nessus identifies the vulnerabilities that need attention with high-speed, accurate scanning—and highlights which vulnerabilities should be addressed first.
-
The power of the Tenable Zero Day Research team
-
Tenable researchers leverage extensive intel sources. Find and provide protection from the latest threats via new plugins.
-
The power of Tenable grows with you
-
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
Expert—
Built for security professionals like you
Tenable One reduces cyber risk by unifying security visibility, insight and action across the entire attack surface, helping organizations quickly find and fix critical weaknesses.
With Advanced Support for Nessus Pro, your teams will have access to phone, Community, and chat support 24 hours a day, 365 days a year. This advanced level of technical support helps to ensure faster response times and resolution to your questions and issues.
Advanced Support Plan Features
Phone Support
Phone support 24 hours a day, 365 days a year, available for up to ten (10) named support contacts.
Chat Support
Chat support available to named support contacts, accessible via the Tenable Community is available 24 hours a day, 365 days a year.
Tenable Community Support Portal
All named support contacts can open support cases within the Tenable Community. Users can also access the Knowledge Base, documentation, license information, technical support numbers, etc.; utilize live chat, ask questions to the Community, and learn about tips and tricks from other Community members.
Initial Response Time
P1-Critical: < 2 hr
P2-High: < 4 hr
P3-Medium: < 12 hr
P4-Informational:
< 24 hr
Support Contacts
Support contacts must be reasonably proficient in the use of information technology, the software they have purchased from Tenable, and familiar with the customer resources that are monitored by means of the software. Support contacts must speak English and conduct support requests in English. Support contacts must provide information reasonably requested by Tenable for the purpose of reproducing any Error or otherwise resolving a support request.
Tenable One
Request a demo
The world’s leading AI-powered exposure management platform.
Thank You
Thank you for your interest in Tenable One.
A representative will be in touch soon.
Form ID: 7469
Form Name: one-eval
Form Class: c-form form-panel__global-form c-form--mkto js-mkto-no-css js-form-hanging-label c-form--hide-comments
Form Wrapper ID: one-eval-form-wrapper
Confirmation Class: one-eval-confirmform-modal
Simulate Success