APP-06Moderate

How to Fix: Third-Party Enterprise App Permissions

Step-by-step guide to implement third-party enterprise app permissions in your Microsoft 365 environment.

20-30 minutes

Estimated Time

4

Steps

high

Severity

Enhanced Security

Baseline Level

Why This Matters

Third-party enterprise apps are applications from external vendors that you consented to but do not control. These apps pose supply chain risk - a compromised vendor could access your tenant data. Review vendor security certifications and limit permissions to minimum necessary.

Prerequisites

  • 1Global Administrator or appropriate admin role in Microsoft Entra ID
  • 2Access to Microsoft Entra admin center (entra.microsoft.com)

Expected Configuration

  • Third-party enterprise apps with elevated permissions are identified and reviewed
  • External vendor apps with Directory.ReadWrite.All, Mail.ReadWrite.All are flagged
  • Each third-party app with elevated permissions has documented vendor assessment
  • Quarterly review of third-party app permissions is conducted

Remediation Steps

1

Audit Current Applications

Review the applications in your Entra ID tenant.

  • Navigate to Microsoft Entra admin center
  • Go to Applications > Enterprise applications
  • Review app registrations and permissions
2

Identify Required Changes

Determine which applications need modification.

  • Compare against expected configuration
  • Identify risky or non-compliant apps
  • Plan remediation approach
3

Apply Remediation

Make the necessary changes to application configurations.

  • Update consent settings as needed
  • Modify application permissions
  • Configure app governance policies
4

Verify Compliance

Confirm applications meet security requirements.

  • Run TrueConfig scan
  • Review any remaining findings
  • Document changes made

Related Resources

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