HEAD-TO-HEAD · FACTS ONLY
Cortex Xpanse vs Tenable ASM: exposure management facts side by side
SHORT ANSWER
Cortex Xpanse describes 3 of the five tool types on the pages we read and Tenable ASM describes 4; they differ on exposure validation. On proof, Cortex Xpanse does not describe exploit testing on the pages we read and Tenable ASM describes exploitability checks but not attack-style testing. We do not score either; the right choice depends on your estate, current platform, WAFs and capacity to fix.
By The Exposure Desk · Exposure Management Finder · Published 2026-10-11
Desk research from public vendor pages read in September 2026, updated 2026-10-11. Profiles follow our published method; we did not run the products.
How do their shapes compare?
- Cortex Xpanse
- Tenable Attack Surface Management
- Outer point: described on the vendor's pages we read
- Inner point: not in our sources (it may exist; we did not find it)
What are the facts, side by side?
| Fact | Cortex Xpanse | Tenable Attack Surface Management |
|---|---|---|
| Positioning | Palo Alto Networks' attack surface management product, built on internet-wide scanning and automated response playbooks, sold within the Cortex portfolio. | Tenable's attack surface management, part of the Tenable One exposure management platform, drawing on an attack surface map of more than 5 billion assets. |
| Deployment | Part of the Palo Alto Networks Cortex portfolio, with Cortex XSOAR playbooks and Prisma Cloud alongside. Source: Cortex Xpanse attack surface management · Read 27 Sep 2026 | Part of Tenable One; sold through a demo request. Source: Tenable Attack Surface Management · Read 27 Sep 2026 |
| EASM discovery | Described Palo Alto Networks says Xpanse scans all 4.3 billion IPv4 addresses multiple times a day and more than 500 billion ports daily. Source: Cortex Xpanse · Read 27 Sep 2026 | Described Identifies domains related to your inventory from a map of 5 billion+ assets, with 200+ metadata fields. Source: Tenable Attack Surface Management · Read 27 Sep 2026 |
| Exposure validationDiffers | Not in our sources | Described Tenable One adds attack path analysis across 150+ techniques; exploit testing is not described for the ASM product. Source: Tenable One · Read 27 Sep 2026 |
| Exposure management platforms | Described Sits in Cortex exposure management alongside Cortex XSOAR and Prisma Cloud. Source: Cortex exposure management · Read 27 Sep 2026 | Described Feeds Tenable One, which Tenable calls its exposure management platform, with Tenable One Connectors for third-party data. Source: Tenable One · Read 27 Sep 2026 |
| CTEM programme support | Described Discovery and automated response are described; exploit validation is not. Source: Cortex Xpanse · Read 27 Sep 2026 | Described Tenable One covers discovery, attack paths and Hexa AI automated remediation workflows; exploit validation is not described. Source: Tenable One · Read 27 Sep 2026 |
| WAF posture | Not in our sources | Not in our sources |
| Subsidiary and owner attributionDiffers | Partly Identifies the stakeholders for third-party exposures; subsidiary attribution is not described. Source: Cortex Xpanse attack surface management · Read 27 Sep 2026 | Not in our sources |
| Internal as well as external assetsDiffers | Not in our sources | Matches Tenable One includes vulnerability management alongside external attack surface data. Source: Tenable: buy · Read 27 Sep 2026 |
| Cloud connections namedDiffers | Matches Xpanse works with Prisma Cloud. Source: Cortex Xpanse attack surface management · Read 27 Sep 2026 | Not in our sources |
| Exploitability checkedDiffers | Not in our sources | Partly Attack path analysis across 150+ techniques in Tenable One, not exploit testing. Source: Tenable One · Read 27 Sep 2026 |
| Attack-style testing | Not in our sources | Not in our sources |
| Works through your WAF or edge | Not in our sources | Not in our sources |
| WAF coverage across several vendors | Not in our sources | Not in our sources |
| Retests after a fix | Not in our sources | Not in our sources |
| Routes findings to owners and ticketsDiffers | Matches Routing and remediation through Cortex XSOAR playbooks. Source: Cortex Xpanse attack surface management · Read 27 Sep 2026 | Partly Tenable One Advanced lists orchestrated remediation through manual or automated ticketing workflows. Source: Tenable One pricing · Read 11 Oct 2026 |
| Applies a compensating controlDiffers | Matches Active Response runs built-in automated playbooks. Source: Cortex Xpanse · Read 27 Sep 2026 | Partly Hexa AI orchestrates automated remediation in Tenable One. Source: Tenable One · Read 27 Sep 2026 |
| Price or pricing basis publishedDiffers | Partly No price from Palo Alto Networks; a UK G-Cloud 14 listing by reseller KHIPU Networks shows £70,850.84 per instance per year. Source: UK G-Cloud 14 listing: Cortex Xpanse (reseller KHIPU Networks) · Read 11 Oct 2026 | Not in our sources |
| Trial or self-serve start | Not in our sources | Not in our sources |
| Platform it extends | Native ties to Cortex XSOAR playbooks and Prisma Cloud. Source: Cortex Xpanse attack surface management · Read 27 Sep 2026 | External findings feed Tenable One next to Tenable vulnerability data. Source: Tenable One · Read 27 Sep 2026 |
| Integrations | Cortex XSOAR and Prisma Cloud inside the Palo Alto Networks portfolio. Source: Cortex Xpanse attack surface management · Read 27 Sep 2026 | Tenable One Connectors bring third-party data into the platform. Source: Tenable One · Read 27 Sep 2026 |
| Price | Not published by Palo Alto Networks. Reseller listing (UK G-Cloud 14, KHIPU Networks): £70,850.84 an instance a year, no free trial, public-facing attack surfaces only. Source: UK G-Cloud 14 listing: Cortex Xpanse (reseller KHIPU Networks) · Read 11 Oct 2026 | Not published. Tenable One is sold in two packages, Foundation and Advanced, both by quote; ASM is not sold online. Tenable publishes some adjacent prices, for example Tenable One Vulnerability Management at $3,700 for one year for up to 250 assets. Source: Tenable One pricing · Read 11 Oct 2026 |
Where do they differ?
- Exposure validation: Cortex Xpanse is not in our sources; Tenable ASM describes it.
- Subsidiary and owner attribution: Cortex Xpanse partly matches; Tenable ASM is not in our sources.
- Internal as well as external assets: Cortex Xpanse is not in our sources; Tenable ASM matches.
- Cloud connections named: Cortex Xpanse matches; Tenable ASM is not in our sources.
- Exploitability checked: Cortex Xpanse is not in our sources; Tenable ASM partly matches.
- Routes findings to owners and tickets: Cortex Xpanse matches; Tenable ASM partly matches.
- Applies a compensating control: Cortex Xpanse matches; Tenable ASM partly matches.
- Price or pricing basis published: Cortex Xpanse partly matches; Tenable ASM is not in our sources.
Choose Cortex Xpanse if
- You already run Cortex XSOAR or Prisma Cloud
- You want automated response playbooks on newly found exposures
Choose Tenable ASM if
- You already run Tenable vulnerability management
- You want external findings in the same platform as internal vulnerabilities
Which limits should you check?
Cortex Xpanse
- Exploit validation is not described on the product pages we read.
- No price from Palo Alto Networks (only a UK reseller listing), and subsidiary attribution is not described.
Tenable ASM
- ASM is quote-only, with no trial listed.
- Exploit testing is not described, and remediation depends on buying into Tenable One.
Questions readers ask
Is Cortex Xpanse or Tenable ASM better?
Neither is scored on this site. Cortex Xpanse describes 3 of five tool types and Tenable ASM 4 on the pages we read, and they differ on 8 recorded facts. Which fits depends on your estate, current platform, need for proof, WAFs and capacity to fix; the finder checks those.
Which of the two proves exploitability?
Cortex Xpanse: exploitability checked: Not in our sources; attack-style testing: Not in our sources. Tenable ASM: exploitability checked: Partly; attack-style testing: Not in our sources.
Do Cortex Xpanse or Tenable ASM publish prices?
Cortex Xpanse: Not published by Palo Alto Networks. Reseller listing (UK G-Cloud 14, KHIPU Networks): £70,850.84 an instance a year, no free trial, public-facing attack surfaces only. Tenable ASM: Not published. Tenable One is sold in two packages, Foundation and Advanced, both by quote; ASM is not sold online. Tenable publishes some adjacent prices, for example Tenable One Vulnerability Management at $3,700 for one year for up to 250 assets.