When your endpoint detection and response (EDR) platform ships with a privilege escalation vulnerability, you've got more than a vendor problem. You've got a procurement and oversight gap that no compliance framework explicitly tells you to close.
On September 3, a researcher published a working zero-day exploit targeting CrowdStrike's Falcon Sensor, specifically abusing the Microsoft Office File Suspicious Macro Removal feature. CrowdStrike advised customers to disable that setting while investigating. No CVE has been assigned yet. This isn't an isolated case: the same researcher previously disclosed zero-days in Kaspersky and Avast products.
The question isn't whether your security vendor will ship a flaw. It's whether you've built the controls to catch it before an attacker does.
Establishing Vendor Security Assurance Controls
This checklist helps you establish vendor security assurance controls for security products themselves. Use it during procurement, onboarding, and ongoing vendor risk reviews for EDR, SIEM, identity management, vulnerability scanners, and other tools that touch privileged systems or sensitive data.
Prerequisites
Before you start:
- You have a vendor risk management program with defined risk tiers and review cadences.
- You maintain a technology asset inventory that includes security product deployments, versions, and privilege levels.
- You have defined roles for who approves security tool purchases, who manages vendor relationships, and who monitors security advisories.
Good looks like: Your CISO or security engineering lead can pull a list of every security product in production, its privilege level, and when it was last reviewed, in under five minutes.
Security Product Vendor Assurance Checklist
1. Vendor Security Testing Disclosure
☐ Vendor provides evidence of third-party penetration testing or red team assessments conducted within the past 12 months.
What good looks like: You receive a summary report showing scope, methodology, findings severity distribution, and remediation status. The vendor doesn't redact all findings; you see at least high-level categories of what was tested and what passed.
2. Vulnerability Disclosure Program
☐ Vendor operates a public vulnerability disclosure or bug bounty program with documented response timelines.
What good looks like: The vendor's security page lists how to report vulnerabilities, expected acknowledgment timeframes (e.g., 48 hours), and remediation SLAs by severity. You can verify active researcher participation through platforms like HackerOne or Bugcrowd.
3. CVE Assignment and Tracking
☐ Vendor commits to requesting CVE assignments for confirmed vulnerabilities and publishing security advisories within defined timeframes.
What good looks like: Your vendor contract or security addendum states that the vendor will request CVEs within 7 days of confirming a vulnerability and publish advisories within 30 days of patch availability. You don't learn about product vulnerabilities from third-party researchers before the vendor tells you.
4. Patch and Update Transparency
☐ Vendor publishes release notes that explicitly identify security fixes, affected versions, and recommended upgrade paths.
What good looks like: Release notes distinguish between feature updates and security patches. Each security fix references a CVE or internal tracking number, lists affected versions, and states whether the issue is exploitable remotely or requires local access. You can map advisories to your deployed versions without contacting support.
5. Privileged Access Justification
☐ Vendor documents what privileged access the product requires, why it needs that access, and what controls limit its use.
What good looks like: The vendor provides a privilege matrix showing which product components require SYSTEM, root, or kernel-level access, which features depend on those privileges, and whether you can run the product with reduced privileges for specific use cases.
6. Secure Development Lifecycle Evidence
☐ Vendor provides evidence of secure coding practices, including static analysis, dependency scanning, and code review requirements.
What good looks like: The vendor shares its SDLC policy showing mandatory security gates (e.g., static analysis before merge, dependency checks in CI/CD, security-focused code review for authentication and authorization changes). You receive an annual summary of security tool coverage and critical finding remediation rates.
7. Incident Notification Obligations
☐ Your contract requires the vendor to notify you within 24 hours if the product is exploited in the wild or if a critical vulnerability is discovered.
What good looks like: The contract defines "critical" (e.g., CVSS 9.0+, remote code execution, privilege escalation) and specifies notification channels (security contact email, phone, ticketing system). The vendor commits to providing interim guidance if a patch isn't immediately available.
8. Configuration Hardening Guidance
☐ Vendor publishes and maintains configuration benchmarks or hardening guides specific to your deployment model (cloud, on-premises, hybrid).
What good looks like: You have access to a CIS-style benchmark or vendor-maintained hardening guide that lists which features to disable in high-security environments, which network ports to restrict, and how to reduce attack surface without breaking core functionality.
9. Third-Party Component Inventory
☐ Vendor discloses open source and third-party components included in the product, with version numbers and known vulnerabilities.
What good looks like: The vendor provides a software bill of materials (SBOM) in a standard format (SPDX, CycloneDX) that your tooling can ingest. The SBOM is updated quarterly or when components change.
10. Segregation and Least Privilege Testing
☐ You have tested whether the security product can be deployed with network segmentation and least privilege controls appropriate to its risk tier.
What good looks like: Your security engineering team has validated that the product can run in a restricted network zone, that it doesn't require broad domain admin rights, and that you can apply application control policies to its executables.
Common Mistakes
Treating security vendors as trusted by default. Security products touch your most sensitive systems. They deserve the same vendor risk scrutiny you apply to payment processors or HR systems.
Ignoring privilege escalation paths. A vulnerability in a product running with SYSTEM or kernel privileges is categorically more dangerous than one in a user-space application.
Relying on compliance certifications alone. SOC 2 Type II and ISO 27001 certificates tell you the vendor has controls. They don't tell you whether the product itself is secure. Ask for product-specific security testing evidence.
Skipping the SBOM. If your vendor can't or won't provide a software bill of materials, you have no way to know if the product contains a vulnerable version of Log4j, OpenSSL, or any other widely exploited component.
Next Steps
If you checked fewer than 8 of the 10 items above for a security product currently in production, schedule a vendor security review within the next 30 days. Prioritize products with kernel-level access, broad network visibility, or privileged credential storage.
For new security product evaluations, make items 1, 2, 5, 7, and 9 mandatory requirements in your RFP. A vendor that can't demonstrate secure development practices and transparent vulnerability handling shouldn't be managing your security posture.
Update your vendor risk management policy to explicitly classify security products as high-risk vendors requiring annual reviews, regardless of spend. The cost of a compromised EDR or SIEM platform isn't measured in dollars lost; it's measured in attacker dwell time while your detection stack works for them instead of you.
