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Cybersecurity · head to head

HashiCorp Vault vs Nessus

HashiCorp Vault logo

HashiCorp Vault

Cybersecurity

Manage secrets and protect sensitive data

From
Free
Rated
-
Full reviewWebsite
Nessus logo

Nessus

Cybersecurity

The most trusted vulnerability assessment solution

From
$4790/year
Rated
-
Full reviewWebsite

The short version

  • Only HashiCorp Vault has a free tier, so it costs nothing to try first.
  • Each has a real cost: HashiCorp Vault policies are written in HCL with no graphical user interface for policy management or editing; Nessus nessus Professional is $4,790 for one year, with no free or low cost commercial tier
  • They diverge on capability: HashiCorp Vault covers Secret storage, Nessus covers Vulnerability scanning.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which HashiCorp Vault and Nessus actually diverge.

Attributes where HashiCorp Vault and Nessus differ
AttributeHashiCorp VaultNessus
Starting priceFree$4790/year
Pricing modelopen-sourcesubscription
Free tierYesNo
PlatformsLinux, Windows, Mac, ApiDesktop, Api
Founded20142002

Identical on both: user rating (Not yet rated), category (Cybersecurity).

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 HashiCorp Vault

  • Secret storage
  • Dynamic secrets
  • Encryption as a service
  • Identity-based access
  • Audit logging
  • Leasing and renewal
  • Secret engines
  • Auth methods

Only in Nessus

  • Vulnerability scanning
  • Configuration auditing
  • Malware detection
  • Web application scanning
  • Cloud scanning
  • Compliance checks
  • Patch auditing
  • Pre-built policies

Both cover

  • AWS
  • Azure
  • On-premise deployment
  • Cloud deployment

What people use each for

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

HashiCorp Vault

  • Secrets managementnot Nessus
  • Database credentialsnot Nessus
  • API keysnot Nessus
  • SSH accessnot Nessus
  • PKI and certificatesnot Nessus

Nessus

  • Vulnerability scanning for individual practitionersnot HashiCorp Vault
  • Enterprise vulnerability managementnot HashiCorp Vault
  • Web application security assessmentsnot HashiCorp Vault

Where each one falls short

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

HashiCorp Vault

  • Policies are written in HCL with no graphical user interface for policy management or editing
  • Unsealing requires managing multiple key shares and coordinating a quorum of operators
  • Community Edition lacks enterprise features like namespaces and disaster recovery replication
  • Requires additional monitoring solutions for alerting and observability

Nessus

  • Nessus Professional is $4,790 for one year, with no free or low cost commercial tier
  • Multi year terms are the only discount route, at $9,330.95 for two years and $13,637.54 for three
  • It is a single user scanner, so team workflows mean migrating to another Tenable product
  • Tenable One vulnerability management is priced separately, starting at $3,500 a year for 100 assets

Pricing, plan by plan

HashiCorp Vault

Free
  • Open SourceFree
    • Secrets management
    • Encryption
    • Community support
  • Vault Enterprise$6000/year
    • Replication
    • HSM support
    • Advanced audit

Nessus

$4790/year
  • Nessus Professional$4790/year
    • 1 year license
    • Best for individual security professionals
  • Nessus Professional 2-Year$9330.95/2 years
    • 2 year license with discounted rate vs. annual
  • Nessus Professional 3-Year$13637.54/3 years
    • 3 year license with discounted rate vs. annual
  • Nessus Expert$6790/year
    • 1 year license
    • Enhanced capabilities vs. Professional

Which should you pick?

Choose HashiCorp Vault if

  • You need secret storage.
  • You want to start without paying.
  • You work on Linux, Windows, Mac, Api.
  • You also want dynamic secrets.
HashiCorp Vault review

Choose Nessus if

  • You need vulnerability scanning.
  • You work on Desktop, Api.
  • You also want configuration auditing.
Nessus review

Questions people ask

Is HashiCorp Vault or Nessus better?
Neither clearly leads. HashiCorp Vault starts at Free and Nessus at $4790/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, HashiCorp Vault or Nessus?
HashiCorp Vault has a free tier; the other does not. Paid plans start at Free for HashiCorp Vault and $4790/year for Nessus.
Does HashiCorp Vault or Nessus run on more platforms?
HashiCorp Vault runs on Linux, Windows, Mac, Api. Nessus runs on Desktop, Api.
Can I use HashiCorp Vault for free?
Yes. HashiCorp Vault has a free tier, so you can try it without paying. Nessus starts at $4790/year.
What is HashiCorp Vault best used for?
HashiCorp Vault is most often used for secrets management, database credentials, api keys, ssh access. Of those, secrets management and database credentials are not what Nessus is typically brought in for.
What can HashiCorp Vault do that Nessus cannot?
HashiCorp Vault covers Secret storage, Dynamic secrets, Encryption as a service, Identity-based access. Nessus covers Vulnerability scanning, Configuration auditing, Malware detection, Web application scanning. Both handle AWS, Azure, On-premise deployment, Cloud deployment.

Answered from the vendors’ own pages

HashiCorp Vault: Does HashiCorp Vault have a free version?

Yes. The open-source Community Edition is completely free and includes core secrets management, dynamic secrets, and encryption as a service. It is self-hosted with no licensing fees or secret count limits, but lacks enterprise features like namespaces, disaster recovery replication, and Sentinel policies.

Source
Nessus: What is the cheapest Nessus option?

Nessus Professional starts at $4,790 per year for a 1-year license. Multi-year commitments offer discounts, with 2-year licenses at $9,330.95 and 3-year licenses at $13,637.54.

Source
HashiCorp Vault: Can I use HashiCorp Vault in production?

The Community Edition is suitable for non-production environments and small teams. For production deployments, organizations typically use HCP Vault Dedicated (managed cloud service starting at approximately 22 USD per month) or Vault Enterprise with custom pricing that includes disaster recovery, performance replication, and 24/7 support.

Source
Nessus: What is the difference between Nessus Professional and Expert?

Nessus Expert costs $6,790 per year for a 1-year license (compared to $4,790 for Professional) and includes enhanced capabilities. Multi-year rates are available at discounted prices.

Source
HashiCorp Vault: What are the main integrations available?

Vault integrates with AWS, Azure, Google Cloud, Active Directory, Okta, and 80+ other platforms. It supports dynamic credential generation for cloud providers, database systems, and identity services, enabling centralized secret management across multi-cloud infrastructure.

Source
Nessus: Does Nessus offer optional support or training?

Yes, Nessus offers add-on services: Advanced Support at $400/year provides 24x365 access to phone, email, community, and chat support. On-Demand Training costs $275/year for Fundamentals course access or $385/year for both Fundamentals and Advanced courses.

Source
HashiCorp Vault: Does Vault work offline?

Vault requires network connectivity to function as it is a centralized secrets management server. However, it can be deployed on-premises for air-gapped environments, and clients can cache short-lived tokens for temporary offline access once authenticated.

Source
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