Tenable spotlight: Nessus licenses, support and training prices

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Tenable is a cybersecurity company, and Nessus is its best-known product: a vulnerability scanner that security teams, IT departments and independent consultants use to find weaknesses in servers, laptops, network devices and cloud systems. A lot of enterprise security software hides its pricing behind a sales call. Tenable lists prices for Nessus, and for some of its cloud products, on its pricing page, so you can budget before you speak to anyone.

It suits a small security team, an IT manager who has to show auditors that systems are being scanned, or a penetration tester who needs a scanner they can use on client jobs. Bigger organizations will probably want Tenable One, its exposure management platform. That's sold by quote, so it isn't covered here.

What's worth a look

These are the licenses and extras Tenable sells online, with the prices shown on its own pages when we checked.

For most buyers the choice comes down to Nessus Professional or Nessus Expert. Professional, at $4,790 for a one-year license, includes unlimited vulnerability scanning, pre-built policies for configuration and compliance audits, vulnerability scoring and configurable reports. Expert costs $6,790 a year and adds web app scanning and external attack surface discovery scanning, which helps if you need to check public-facing sites as well as internal machines.

The add-ons are cheaper. Advanced Support costs $400 and gives 24x365 access to phone, email, community and chat support. The on-demand Nessus Fundamentals course costs $275 for a year's access for one person, and the Nessus Advanced course costs $110. Both are worth thinking about if someone new is taking over the scanner.

Tenable also sells Tenable One Vulnerability Management and Tenable One Web App Scanning online, priced by the number of assets or domains you cover. Check the figure in the buy box for your own count before you order.

Current offers

We don't have any Tenable discount codes right now. The saving Tenable advertises itself is on multi-year licenses: two or three years of Nessus Professional or Nessus Expert, paid up front, costs less than renewing every year.

How to save more

• Work out how long you'll use it. Three years of Nessus Professional costs $13,637.54, against $4,790 for one year. That only pays off if you're sure you'll still need the scanner in year three.
• Don't pay for Expert unless you'll use it. If you only scan internal networks, the extra $2,000 a year for web app and attack surface scanning may not be worth it.
• Try before you buy. Tenable offers trials of its products, and Nessus Professional users can upgrade to Nessus Expert free for 7 days to see whether the extra scanning is useful.

Products, prices and offers checked on the store's own website on 5 Nov 2026. Prices and stock can change.

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