Tenable vs Vulnios: Feature & Pricing Comparison 2026

If you're evaluating vulnerability management platforms in 2026, you've probably seen Tenable's pricing and wondered: is there an alternative that doesn't cost $4,790/year just to get started?

This guide compares Tenable Nessus and the Vulnios platform across features, pricing, scanning capabilities, and target audience — so you can make an informed decision for your team.

Quick Comparison

| Feature | Tenable Nessus | Vulnios |

|---|---|---|

| Starting Price | $4,790/year | $0 (free tier) |

| Enterprise Tier | $20,000-50,000+/year | $499/month |

| Free Trial | 7 days (credit card required) | Free forever (no credit card) |

| Scanning Engines | 1 (proprietary) | 48 open-source engines |

| EPSS Scoring | Add-on (Tenable.io) | Built-in (all tiers) |

| KEV Enrichment | Add-on (Tenable.io) | Built-in (all tiers) |

| Dark Web Monitoring | ❌ Not included | ✅ Included (Pro+) |

| OSINT Dashboard | ❌ Not included | ✅ Included (free) |

| Self-Hosted Workers | ❌ Cloud only | ✅ Hybrid + USB scanning |

| AI-Powered Reports | Limited | ✅ Full AI enrichment |

| SOC 2 Certified | ✅ Yes | ✅ Yes |

| Deployment Time | Days-weeks | Minutes |

Pricing Deep Dive

Tenable Pricing

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

Tenable Nessus Expert: $7,490/year (includes web app scanning)

Tenable.io: Custom pricing, typically $20,000–$50,000+/year

Tenable.sc (SecurityCenter): $30,000+/year (on-prem)

Free trial: 7 days, requires credit card

Vulnios Pricing

Free: $0/month — basic scanning, Vulnerability Radar, threat intel

Pro: $49/month — unlimited scanning, dark web monitoring, AI reports

Pro+: $149/month — advanced API access, priority scanning, custom integrations

Enterprise: $499/month — multi-tenant, dedicated support, SLA

Free tier: Permanent, no trial expiration, no credit card required

Bottom line: Vulnios Pro costs less per month ($49) than what you'd spend on a single Tenable Nessus license per year ($4,790). And the free tier gives you more functionality than Tenable's 7-day trial.

Scanning Capabilities

Tenable's Approach: Single Proprietary Engine

Tenable Nessus uses a single proprietary scanning engine — the Nessus scanner. It's comprehensive for network vulnerability assessment and has excellent plugin coverage for OS patches and common CVEs.

Strengths:

Mature vulnerability detection (20+ years)

Large plugin library (200,000+ checks)

Strong compliance scanning (PCI, HIPAA)

Limitations:

Single engine means single point of failure for detection

No container image scanning (Nessus alone)

No SBOM generation

No source code analysis

Vulnios's Approach: 48 Open-Source Engines

Vulnios orchestrates 48 industry-standard open-source engines including Trivy, Grype, Nuclei, Semgrep, ZAP, ClamAV, Syft, and more. Instead of relying on one engine, Vulnios runs the right combination for each target type and deduplicates findings.

Strengths:

Multi-engine coverage eliminates blind spots

Container, repository, web app, and network scanning

SBOM generation with Syft

Priority-based finding resolution (deduplication across engines)else

Target types supported:

Container images (Docker, OCI)

Git repositories

Web applications (URLs)

Network hosts

Cloud configurations

API endpoints

Vulnerability Prioritization

This is where the real difference shows up.

Tenable: CVSS-Heavy

Tenable primarily ranks findings by CVSS score. Tenable.io adds VPR (Vulnerability Priority Rating), but this requires the more expensive cloud platform, not Nessus standalone.

Result: Most organizations using Tenable Nessus face alert fatigue — hundreds of "critical" findings, most of which are never exploited in the wild.

Vulnios: EPSS + KEV + CVSS Combined

Vulnios combines three signals on every finding:

CVSS: Theoretical worst-case impact

EPSS: Probability of exploitation in the next 30 days

KEV: Whether CISA has confirmed active exploitation

A vulnerability with CVSS 9.8 / EPSS 0.01% gets deprioritized. A vulnerability with CVSS 7.0 / EPSS 95% + KEV gets flagged immediately.

Result: You fix the vulnerabilities that attackers are actually targeting, not the ones that just look scary on paper.

Dark Web Monitoring

Tenable: Not included in any Nessus tier. Available only through Tenable.io or third-party integrations at additional cost.

Vulnios: Built into Pro and above. Monitors breach databases, paste sites, credential leaks, and dark web forums for mentions of your domains, emails, and keywords. Alerts are integrated directly into your vulnerability dashboard.

OSINT & Threat Intelligence

Tenable: No OSINT capabilities. Threat intelligence is limited to Tenable's own research feed.

Vulnios: Includes a full OSINT dashboard (osint.vulnios.com) — free for all users — with 435+ intelligence feeds, conflict tracking, military flight monitoring, dark web scanning, and AI-powered threat briefs. This is a unique capability that no other vulnerability management vendor offers.

Self-Hosted & Hybrid Scanning

Tenable: Nessus runs locally but requires a full installation. Tenable.io is cloud-only. No USB-based or air-gapped scanning option.

Vulnios: Hybrid Workers allow you to run scans on-prem, from a USB drive, or in air-gapped environments. Your scan data stays on your infrastructure while results sync to the cloud dashboard. This is critical for regulated industries (healthcare, finance, government) where data residency matters.

Who Should Choose Tenable?

Tenable is the right choice if:

You're a large enterprise (5,000+ employees) with an existing Tenable deployment

You need Tenable.io's extensive third-party integrations

Your compliance framework specifically requires Tenable reports

You have a $30K+ annual security tooling budget

Who Should Choose Vulnios?

Vulnios is the right choice if:

You're an SMB, startup, or lean security team

You need multi-engine scanning (not just one scanner)

You want EPSS + KEV prioritization built-in, not as an add-on

You need dark web monitoring in the same platform

You want to start free and scale up

You need self-hosted/hybrid scanning for regulated environments

You're an MSSP managing multiple client environments

Migration from Tenable

Switching from Tenable to Vulnios takes minutes:

Sign up at vulnios.com — free, no credit card

Add your targets — same IPs, domains, and container registries you scan in Tenable

Run your first scan — Vulnios auto-selects the optimal engine combination

Compare findings — Vulnios typically surfaces the same critical findings plus additional containers and code-level vulnerabilities that Nessus misses

Generate a report — AI-enriched, compliance-ready, downloadable as PDF or DOCX

The Bottom Line

Tenable is a mature, trusted platform — but it was built for enterprise budgets and enterprise teams. If you're spending $4,790+/year on Nessus and still missing container vulnerabilities, dark web exposure, and OSINT context, Vulnios offers all of that starting at $0.

Try Vulnios free: No credit card, no trial expiration, no sales call required.

---

Ready to switch? Start at vulnios.com. 48 engines, dark web monitoring, OSINT intelligence, AI-powered reports — free tier included.