ASM with SIEM and SOAR integration

Several external attack surface management (EASM) solutions offer automated asset discovery and integrations with security operations and IT service management systems. The key distinction is whether a vendor provides documented native integrations for all three categories — SIEM, CMDB, and SOAR — or relies on APIs, custom connectors, or a broader platform.

Based on the vendor documentation and market research, I would start with Outpost24, Bitsight, Mandiant Attack Surface Management, and Cyble Vision, then validate the exact CMDB and SOAR connectors against your existing stack.outpost24.com+3

Shortlist of EASM solutions

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1. Outpost24 EASM

(Strongest stated fit)

• Automated discovery: Continuously discovers known and unknown internet-facing assets, including domains, subdomains, IPs, cloud instances, and third-party connections.
• SIEM: Splunk integration.
• CMDB: Explicitly identifies CMDB integration as a use case.
• SOAR: Explicitly identifies SOAR integration.
• Validation needed: Confirm the specific native connectors available for your CMDB and SOAR products.

Source: Official Outpost24 EASM documentation.outpost24.com+1

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2. Bitsight External Attack Surface Management

• Automated discovery: Finds and attributes external assets and continuously refreshes the organization's footprint.
• SIEM: Splunk and Microsoft Sentinel.
• SOAR: Palo Alto Cortex XSOAR and Sumo Logic Cloud SOAR.
• CMDB: ServiceNow integration is documented, particularly for incident and remediation workflows.
• Validation needed: Confirm whether the ServiceNow connector synchronizes CMDB configuration items natively, rather than only sending findings into workflows.

Source: Official Bitsight EASM documentation.www.bitsight.com+1

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3. Mandiant Attack Surface Management

• Automated discovery: Continuous asset discovery and monitoring, with configurable scan frequency.
• SIEM: Google Security Operations (Chronicle) and Splunk Enterprise.
• SOAR: Cortex XSOAR.
• CMDB / ITSM: ServiceNow integration is documented.
• Validation needed: Confirm whether the ServiceNow integration provides direct CMDB synchronization or ticketing only.

Source: Official Google Cloud product page.cloud.google.com+3

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4. Cyble Vision / Cyble Odin

• Automated discovery: Cyble Odin is the product to evaluate for external asset discovery; Cyble Vision provides the broader intelligence and integration ecosystem.
• SIEM: Splunk, Microsoft Sentinel, and IBM QRadar are cited in Cyble's integration materials.
• SOAR: Cortex XSOAR is listed.
• CMDB / ITSM: ServiceNow integration is documented, alongside API-based integrations.
• Validation needed: Establish which connectors are native to Odin versus provided through Vision or APIs, and whether CMDB synchronization is supported.

Sources: Cyble Vision and Cyble's integration overview.cyble.com+2

Integration coverage at a glance

This table distinguishes documented product capabilities from items that still require technical confirmation.

Sources: vendor product pages and integration documentation.outpost24.com+3

Important qualification: I found evidence of all three integration categories across these candidates, but not enough public documentation to certify that every one provides three separate, fully native connectors with bidirectional CMDB synchronization. An API integration or ServiceNow ticketing connector alone does not prove that requirement.

My recommendation

Start with Outpost24 and Bitsight for an initial evaluation, then include Mandiant ASM if you use Splunk or Google Security Operations, or Cyble if its wider threat-intelligence capabilities are relevant.

Before selecting a product, ask vendors to demonstrate this end-to-end workflow:

1. Discover a previously unknown internet-facing asset automatically.
2. Create or reconcile its configuration item in your CMDB.
3. Send the exposure finding into your SIEM with asset identity and severity.
4. Trigger a SOAR playbook to create or route remediation work.
5. Update the finding and asset status when remediation is complete.

One question would help me narrow this down: Which SIEM, CMDB, and SOAR products do you currently use? For example, Splunk + ServiceNow CMDB + Cortex XSOAR. I can then focus on vendors whose connectors match your actual stack.

Attack Surface Management (ASM) platforms accelerate remediation when they can push exposure data directly into SIEM (for detection, correlation, and alerting) and SOAR (for automated investigation, ticketing, and response playbooks). The strongest integrations typically support APIs, webhooks, prebuilt connectors, enrichment workflows, and automated remediation actions.docs-cortex.paloaltonetworks.com+1

Common SOAR/SIEM integration patterns that reduce remediation time

• Automatic ticket creation: ASM finds an exposed asset → creates a ServiceNow/Jira ticket with ownership, evidence, and remediation guidance.docs-cortex.paloaltonetworks.com
• Alert enrichment: SIEM alerts are enriched with ASM context such as asset ownership, domains, certificates, IP history, and exposure details.docs.censys.com
• Playbook-triggered response: SOAR workflows can isolate assets, notify owners, start investigations, or launch validation scans.docs-cortex.paloaltonetworks.com
• Continuous asset inventory sync: ASM findings update CMDBs and security tools so remediation teams work from current asset data.docs-cortex.paloaltonetworks.com+1

Selection criteria to evaluate

When comparing ASM platforms, look for:

1. Native connectors for your SIEM/SOAR stack (for example Sentinel, Splunk, Cortex XSOAR, Splunk SOAR).
2. Bidirectional integrations (not just exporting alerts).
3. Asset ownership mapping so findings route to the correct team.
4. API/webhook support for custom automation.
5. Evidence-rich findings (DNS, certificates, hosting, vulnerabilities, business context).
6. Prebuilt remediation playbooks rather than only alert forwarding.

For organizations already using a specific SOC stack, the best fit usually depends on whether the priority is external asset discovery, vulnerability remediation, cloud exposure management, or fully automated incident workflows.www.paloaltonetworks.com

Cortex Xpanse (Palo Alto Networks), CyCognito, and Rapid7 External Attack Surface Management are among the top Attack Surface Management (ASM) platforms that integrate deeply with SIEM and SOAR tools to automate and accelerate remediation.

Effective ASM platforms do not just discover shadow IT and exposed assets; they feed continuous context directly into security orchestration systems to trigger automated tickets, isolate cloud resources, or update SIEM correlation rules.chainguard.dev+1

Top ASM Platforms with SIEM/SOAR Integrations

• Cortex Xpanse (Palo Alto Networks): Offers robust integration with Palo Alto Networks Cortex XSOAR and major SIEMs (like Splunk and Microsoft Sentinel) to automatically map external exposures to internal owners and trigger playbooks.
• CyCognito: Provides rich API-first integrations and pre-built connectors that push prioritized risk findings and remediation guidance into ticketing systems (ServiceNow, Jira) and SOAR platforms for automated workflows.cycognito.com
• Rapid7 Attack Surface Management: Combines external visibility seamlessly with Rapid7's broader ecosystem including InsightIDR (SIEM) and third-party orchestration tools to streamline alert triage and asset context.exabeam.com
• Censys: Known for flexible API capabilities and data feeds that easily plug into custom SIEM dashboards and SOAR playbooks for continuous monitoring and alerting.
• Armis Centrix: Focuses on real-time asset discovery and risk prioritization, offering extensive integrations to sync cyber asset intelligence with security operations and incident response workflows.cycognito.com

Key Integration Capabilities to Look For

If you can share which SIEM and SOAR platforms your team currently uses (e.g., Splunk, Microsoft Sentinel, Cortex XSOAR), I can recommend the exact ASM integration fit and data-sharing workflows for your stack.