Tenable — Independent Software Review

Mitigate business-impacting cyber risk with Tenable One.

Compliance Transparency Index

Grade: A — Score: 95/100

Best For

• Security teams and consultants performing periodic vulnerability assessments. Nessus is the industry-standard scanner with the lowest false-positive rate and 25+ years of plugin development.
• Enterprises building a unified exposure management program across IT, cloud, identity, OT, and web applications. Tenable One consolidates all attack surface data into one platform.
• Organizations in regulated industries (government, healthcare, finance, energy). Tenable holds FedRAMP Authorization, FIPS 140-3 validation, and supports HIPAA, PCI DSS, NERC CIP, and FISMA compliance audits.
• Industrial and critical infrastructure operators. Tenable OT Security provides passive network monitoring and active querying for SCADA, ICS, and IoT devices alongside traditional IT vulnerability management.

Not Ideal For

• Small businesses with limited budgets. Nessus Professional starts at $4,790/year and Tenable Vulnerability Management is priced per asset, making the platform significantly more expensive than SMB-focused tools.
• Organizations looking for endpoint protection or incident response. Tenable focuses on vulnerability and exposure management, not malware detection, EDR, or SIEM.
• Teams that need a simple, single-product solution. Tenable's product portfolio spans 15+ products, and selecting the right combination requires a scoping conversation with sales for most products beyond Nessus.
• Companies wanting fully transparent, self-service pricing for enterprise products. Only Nessus and Web App Scanning have public prices; Tenable One, Cloud Security, Identity Exposure, and OT Security are all quote-based.

Operational Overview

Pricing Structure

Nessus Professional: $4,790/year (1 scanner)

• 1 year license (multi-year discounts available)
• Unlimited IT vulnerability assessments
• Real-time vulnerability updates
• Pre-built policies for configuration and compliance audits
• Vulnerability scoring for prioritization (VPR, CVSS, EPSS)
• Configurable reports
• Flexible deployment (Windows, Linux, macOS)

Nessus Expert: $6,790/year (1 scanner)

• All Nessus Professional features, plus:
• Web app scanning
• External attack surface discovery scanning
• Multi-year license discounts available

Tenable Vulnerability Management: Starting from €5,238.09/year (100 assets); contact sales for USD pricing and larger deployments

• Cloud-based continuous vulnerability management
• Per-asset pricing (online purchase up to 250 assets)
• Built-in prioritization with VPR scoring
• Agent-based and network scanning
• Real-time reporting and dashboards
• Centralized multi-scanner management

Tenable Web App Scanning: $6,790/year (5 FQDNs)

• Automated DAST for web applications
• OWASP Top 10 coverage
• API scanning
• Vulnerable component detection

Tenable One Exposure Management Platform: Custom (request a quote)

• Bundles all Tenable products into one platform:
• Vulnerability Management + Web App Scanning
• Cloud Security (CNAPP, CSPM, CIEM, DSPM, AI-SPM)
• Identity Exposure (Active Directory monitoring)
• OT Security (industrial/IoT visibility)
• AI Exposure management
• Attack Surface Management
• Tenable One Connectors (third-party data ingestion)
• Attack path analysis (150+ MITRE ATT&CK techniques)
• ExposureAI generative assistant
• Exposure analytics and custom exposure cards

Alternative Consideration

Consider switching to Qualys: Qualys offers similar exposure management capabilities with a focus on cloud security.

Frequently Asked Questions

What is the difference between Tenable Nessus and Tenable Vulnerability Management?

Nessus Professional ($4,790/year) is a standalone, on-premises vulnerability scanner for point-in-time assessments from a single deployment. Tenable Vulnerability Management is a cloud-based platform priced per asset that adds continuous monitoring, agent-based scanning, centralized multi-scanner management, and real-time dashboards. Nessus is best for consultants and periodic compliance scans, while Vulnerability Management is designed for organizations that need ongoing asset tracking and distributed scanning across multiple locations.

What is the difference between Tenable Nessus Professional and Nessus Expert?

Nessus Professional ($4,790/year) covers unlimited infrastructure vulnerability scanning with pre-built compliance audit policies and configurable reports. Nessus Expert ($6,790/year) includes all Professional features plus web application scanning and external attack surface discovery scanning. Both are single-scanner licenses with multi-year discount options. A free Nessus Essentials edition scans up to 16 IP addresses for evaluation and small lab environments.

How does Tenable compare to Qualys for vulnerability management?

Tenable holds the #1 market share in vulnerability management according to IDC MarketScape 2025. Qualys VMDR includes native patch management in its base subscription, which Tenable Vulnerability Management does not (Tenable requires integration with tools like ServiceNow, Ivanti, or SCCM for patching). Tenable differentiates with its broader exposure management vision through Tenable One, covering cloud, identity, OT/IoT, and AI security alongside traditional vulnerability scanning. Qualys is often preferred when built-in patching is a priority.

How does Tenable compare to Rapid7 InsightVM?

Tenable rates 4.6 on Gartner Peer Insights (1,216 reviews) compared to Rapid7's 4.3 (749 reviews). Rapid7 InsightVM has a stronger native Jira integration for developer-led remediation workflows, while Tenable has the more mature ServiceNow bidirectional integration for ITSM-driven operations. Rapid7 also offers InsightIDR (SIEM/detection) as a companion product, giving teams vulnerability-to-incident correlation. Tenable counters with Tenable One, which unifies vulnerability, cloud, identity, and OT exposure data in a single platform.

What is Tenable One and how is it priced?

Tenable One is a unified exposure management platform that bundles Tenable Vulnerability Management, Web App Scanning, Cloud Security (CNAPP), Identity Exposure, OT Security, AI Exposure, Attack Surface Management, and Tenable One Connectors for third-party data ingestion. It includes attack path analysis with 150+ MITRE ATT&CK techniques and the ExposureAI generative assistant. Tenable One is custom-priced only through Tenable sales. Free trials are available.

What compliance certifications does Tenable hold?

Tenable holds SOC 2 Type 2 (longest-standing in the industry), SOC 3, ISO 27001/27017/27018, FIPS 140-3 validation, and PCI DSS certification. It is FedRAMP Authorized and GovRAMP Authorized, with ITAR compliance supported through its AWS GovCloud deployment. Tenable is GDPR and CCPA compliant, HIPAA compliant, and TrustArc certified for privacy. The company is pursuing FedRAMP High and DoD IL5 certification.

Does Tenable offer a free vulnerability scanner?

Yes. Nessus Essentials is a free edition that scans up to 16 IP addresses using the same core scanning engine as the paid Nessus tiers. It includes vulnerability detection and remediation guidance but does not include compliance auditing, data export, or technical support. Nessus Essentials Plus is a low-cost annual license for hobbyists and students that raises the limit to 20 IPs with real-time plugin updates and basic reporting. Free trials are also available for Nessus Professional (7 days), Tenable Vulnerability Management, and Tenable One.

Does Tenable support OT and IoT vulnerability management?

Yes. Tenable OT Security provides visibility into operational technology and IoT assets in industrial environments using passive network monitoring and active querying of SCADA, ICS, and IoT devices. It is included in Tenable One or available as a standalone product with custom pricing. Tenable OT Security is designed for critical infrastructure sectors including energy, manufacturing, and utilities, and supports NERC CIP compliance requirements.