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Cybersecurity · head to head

Tenable Nessus vs VMware Carbon Black

Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite
V

VMware Carbon Black

Cybersecurity

Cloud-delivered endpoint protection and EDR, now owned by Broadcom and positioned alongside Symantec.

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Tenable Nessus has a free tier, so it costs nothing to try first.
  • Each has a real cost: Tenable Nessus nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee; VMware Carbon Black broadcom's enterprise model concentrates direct sales and support on its largest accounts and moves everyone else to resellers, so a mid-size customer can lose named support contacts and face a substantially repriced renewal with limited notice.
  • They diverge on capability: Tenable Nessus covers Network scanning, VMware Carbon Black covers Endpoint Standard.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Tenable Nessus and VMware Carbon Black actually diverge.

Attributes where Tenable Nessus and VMware Carbon Black differ
AttributeTenable NessusVMware Carbon Black
Starting priceFreeOn request
Free tierYesNo
PlatformsWindows, Linux, Macos, CloudDesktop, Api

Identical on both: pricing model (subscription), user rating (Not yet rated), category (Cybersecurity), founded (2002).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Tenable Nessus

  • Network scanning
  • Vulnerability detection
  • Configuration assessment
  • Malware detection
  • Compliance checking
  • Cloud security assessment
  • Mobile scanning
  • API access

Only in VMware Carbon Black

  • Endpoint Standard
  • Enterprise EDR
  • Audit and Remediation
  • Single sensor
  • Live Response
  • Workload protection
  • Container security
  • Watchlists and feeds

What people use each for

The jobs each tool is most often brought in to do.

Tenable Nessus

  • Vulnerability scanning of servers, network devices and web applicationsnot VMware Carbon Black
  • Configuration and compliance auditing against hardening benchmarksnot VMware Carbon Black
  • Point in time assessments by consultants and penetration testersnot VMware Carbon Black

VMware Carbon Black

  • A SOC that wants unfiltered endpoint telemetry to hunt over rather than only vendor-generated alertsnot Tenable Nessus
  • A vSphere estate that wants workload protection deployed through the hypervisor instead of installing an agent in every guestnot Tenable Nessus
  • Replacing signature antivirus after an incident where the incumbent product had no record of what the attacker didnot Tenable Nessus
  • An organisation already inside a Broadcom or Symantec enterprise agreement that can consolidate endpoint onto an existing contractnot Tenable Nessus

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Tenable Nessus

  • Nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • Support beyond the base entitlement costs an extra $400 per year for Advanced Support with 24x365 phone and chat access
  • The on demand training course is a separate $275 purchase for a single person for one year
  • Multi year discounts require paying for two or three years up front

VMware Carbon Black

  • Broadcom's enterprise model concentrates direct sales and support on its largest accounts and moves everyone else to resellers, so a mid-size customer can lose named support contacts and face a substantially repriced renewal with limited notice.
  • Continuous EDR recording is retained for a defined window and longer retention is a paid tier, so the investigation you most need is often the one whose telemetry has already aged out, and that is discovered during the incident rather than before it.
  • The product assumes an operator: watchlists, policy tuning and alert triage are ongoing work, and organisations without a dedicated analyst or an MDR contract typically leave policies in monitor mode and pay for telemetry that is never reviewed.
  • The sensor operates in the same kernel and file-filter territory as other endpoint agents, so running it alongside an incumbent antivirus, DLP or backup agent commonly produces performance complaints and requires maintained exclusion lists on both sides.
  • Linux sensor support is tied to specific distribution and kernel versions, so a routine operating system upgrade can leave hosts without a supported sensor until a matching build ships, and anything outside the supported list gets no coverage at all.

Pricing, plan by plan

Tenable Nessus

Free
  • Nessus EssentialsFree
    • Up to 16 ips
    • Network scanning
    • Vulnerability assessment
  • Nessus Professional$2600/year
    • Unlimited targets
    • Enterprise features
    • Advanced analytics
  • Nessus Expert$5200/year
    • All Professional features
    • Cloud integration
    • Advanced reporting

VMware Carbon Black

On request
  • CB Endpoint StandardFree
    • NGAV
    • Behavioral EDR
    • Device control
  • CB Endpoint AdvancedFree
    • All Standard features
    • Threat hunting
    • Audit and remediation
  • CB Endpoint EnterpriseFree
    • All Advanced features
    • Advanced threat hunting
    • Live response

Which should you pick?

Choose Tenable Nessus if

  • You need network scanning.
  • You want to start without paying.
  • You work on Windows, Linux, Macos, Cloud.
  • You also want vulnerability detection.
Tenable Nessus review

Choose VMware Carbon Black if

  • You need endpoint standard.
  • You work on Desktop, Api.
  • You also want enterprise edr.
VMware Carbon Black review

Questions people ask

Is Tenable Nessus or VMware Carbon Black better?
Neither clearly leads. Tenable Nessus starts at Free and VMware Carbon Black at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Tenable Nessus or VMware Carbon Black?
Tenable Nessus has a free tier; the other does not. Paid plans start at Free for Tenable Nessus and On request for VMware Carbon Black.
Does Tenable Nessus or VMware Carbon Black run on more platforms?
Tenable Nessus runs on Windows, Linux, Macos, Cloud. VMware Carbon Black runs on Desktop, Api.
Can I use Tenable Nessus for free?
Yes. Tenable Nessus has a free tier, so you can try it without paying. VMware Carbon Black starts at On request.
What is Tenable Nessus best used for?
Tenable Nessus is most often used for vulnerability scanning of servers, network devices and web applications, configuration and compliance auditing against hardening benchmarks, point in time assessments by consultants and penetration testers. Of those, vulnerability scanning of servers, network devices and web applications and configuration and compliance auditing against hardening benchmarks are not what VMware Carbon Black is typically brought in for.
What can Tenable Nessus do that VMware Carbon Black cannot?
Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection. VMware Carbon Black covers Endpoint Standard, Enterprise EDR, Audit and Remediation, Single sensor.

Answered from the vendors’ own pages

Tenable Nessus: What are the three Nessus offerings?

Nessus Essentials is a free introductory offering for educators, students, and career starters, limited to 16 IPs for scanning. Nessus Professional is designed for consultants and SMBs, providing unlimited IT scans across any location. Nessus Expert is the premium offering extending Professional with web application scanning, infrastructure-as-code scanning, and external attack surface assessment up to 5 domains.

Source
VMware Carbon Black: Who owns Carbon Black now?

Broadcom. It acquired VMware in November 2023, and Carbon Black now sits in Broadcom's enterprise security business alongside Symantec. VMware branding is being phased out.

Tenable Nessus: What OS platforms does Nessus support?

Nessus runs on Debian/Kali Linux, Fedora, FreeBSD, Mac OS X, Red Hat/CentOS, SUSE Linux, Ubuntu, and various Windows versions including Server 2008, 2012, and Windows 7-10.

Source
VMware Carbon Black: Why do the docs use names I do not recognise?

The product has been renamed repeatedly. CB Defense is now Endpoint Standard, CB ThreatHunter is Enterprise EDR and CB LiveOps is Audit and Remediation. Older community answers and runbooks still use the previous names.

Tenable Nessus: Can I use Nessus to scan third-party networks as a consultant?

Yes, Tenable permits you to use Nessus to scan third-party networks. Nessus Professional is ideal for consultants.

Source
VMware Carbon Black: Does it replace my existing antivirus?

Yes on supported Windows, macOS and Linux versions, and running it alongside another antivirus is not recommended because the two agents contend for the same hooks. Check your compliance requirements, as some auditors still ask for a named antivirus product.

Tenable Nessus: Can Nessus perform PCI external scanning?

Yes, you can use Nessus Professional to perform external network scans as required by the PCI DSS 11.2.2 requirement.

Source
VMware Carbon Black: Do I need a full-time analyst to run it?

To get value from Enterprise EDR, effectively yes. The prevention tier can run with part-time attention, but the hunting and recording capability is only worth its cost if somebody is querying it, which is why many customers buy it through an MDR provider.

Tenable Nessus: What additional features does Nessus Expert provide?

Web application scanning, which is dynamic application security testing (DAST) providing comprehensive visibility and insight into web application security issues; scanning code repositories for vulnerabilities; and assessing external attack surface with subdomain discovery.

Source
VMware Carbon Black: How is it licensed?

Per endpoint, per year, with the capability tier determining the rate and workload and container protection priced separately. Extended EDR data retention is an additional line item.

Tenable Nessus: What support options exist for Nessus Professional?

Standard Support includes software upgrades, patches, plugin access, and 24x7 support via chat and community portal. Advanced Support adds 24x7 phone access and committed SLAs: P1 less than 2 hours, P2 less than 4 hours, P3 less than 12 hours, P4 less than 24 hours.

Source
Tenable Nessus: How frequently are Nessus plugins updated?

Nessus plugins are updated daily, based on when vendors and security research sites publish new vulnerabilities.

Source
Tenable Nessus: How does licensing work in virtual machine environments?

Whether you are using Nessus in a physical or a virtual environment, the IP addresses or hosts that you are scanning from must be licensed.

Source
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