Restrict them by reviewing which actions ordinary users can perform and disabling any default allowances you do not need, especially around self-service, directory writes, and resource creation. Use least privilege for tenant settings, limit user consent where appropriate, and monitor for permission drift. The safest posture is one where default user capability is narrow and explicitly justified.
What “default user permissions” means in Entra ID
Default user permissions are the baseline actions ordinary tenant users can perform without extra role assignment or manual approval. In microsoft entra id, that baseline is broader than many teams expect, so the practical task is to distinguish what users truly need from what is merely enabled by default. The aim is not zero user capability, but a narrower, explicitly justified baseline.
That usually means checking the areas where defaults create the most leverage: self-service settings, directory write paths, app consent, group and role-related actions, and any permission that lets a normal user create or modify tenant resources. A good review starts by asking which defaults support real business workflows and which ones only increase blast radius.
For teams hardening Microsoft identity, the most useful companion view is the broader tenant posture and attack path perspective in the Active Directory and Entra ID Hardening Guide, because default permissions are only one part of the overall control surface.
Which default allowances usually deserve the first review
The first candidates for restriction are the permissions that let ordinary users act on behalf of the tenant or widen access without oversight. That includes user consent to applications, self-service resource creation, directory write operations, and any setting that lets a standard user influence identity objects, app registrations, or tenant-wide configuration.
In practice, the most important question is whether a default capability can change trust boundaries. If a user can create an app, grant consent, add members, or write to directory objects, that is not just convenience, it is an access-control decision. Those paths deserve explicit justification, a named owner, and a review cadence.
The clearest failure mode is when a default capability quietly becomes an escalation path. Storm-1283 abused OAuth app abuse in Entra ID to turn app secrets into cloud compute abuse, which shows why ordinary-user defaults around app and consent surfaces should be treated as security controls, not usability settings.
How to narrow the baseline without breaking the tenant
Start with least privilege for tenant settings, then remove only the defaults that are not needed for normal operations. The safest sequence is to reduce user self-service first, then tighten consent and directory-write capabilities, and finally test the result against actual business workflows so you do not break legitimate onboarding or collaboration.
When permission reduction affects app access or delegated use, pair the change with a clear approval path. If users still need to connect to apps, prefer a controlled consent model rather than broad default user consent. If users need elevated access occasionally, move that access to time-bound, approved workflows instead of leaving it permanently available.
Use Entra ID Applications and Consent Guide to shape the consent side of the decision, and use Privileged Identity Management (PIM) Guide when the “default user” discussion actually touches role activation, just-in-time elevation, or privileged approvals.
Risk and Threat Considerations
Broad default user permissions create a low-friction path for abuse because attackers often start with the same user abilities defenders leave enabled for convenience. If a standard user can consent to apps, create resources, or write directory objects, compromise of that one account can become tenant-wide exposure much faster than many teams expect.
Failure mechanism: An attacker or malicious insider uses an ordinary account to exercise default capabilities that were never intended to be attack primitives, then turns those capabilities into persistence, data access, or privilege expansion.
Impact: The result can be unauthorized app trust, hidden access paths, excessive data exposure, or a control gap that survives password resets because the dangerous permission, not just the account, remains in place.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-53 Rev 5, CIS Controls v8 and NIST SP 800-63 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-53 Rev 5 | AC-6 — Least Privilege | Default user permissions are an access-minimization problem. |
| IA-5 — Authenticator Management | Permission drift often follows weak lifecycle control of credentials and access paths. | |
| AC-3 — Access Enforcement | Entra ID defaults are enforced through tenant access-control decisions. | |
| Recommendation — Remove unnecessary user capabilities and keep baseline access narrowly scoped. Tighten credential lifecycle controls that support user and admin access paths. Enforce tenant rules so default user actions are explicitly constrained. | ||
| CIS Controls v8 | CIS-5 — Account Management | Restricting default user permissions depends on managing account capabilities and access paths. |
| Recommendation — Review and reduce default user account capabilities to the minimum needed. | ||
| NIST SP 800-63 | Digital Identity Guidelines | Consent and privileged action decisions depend on reliable identity assurance. |
| Recommendation — Use stronger identity assurance before allowing sensitive user actions. | ||
Practitioner Guidance
What to verify: Confirm which default permissions are actually used in production before removing them. The important check is not whether a setting is “enabled by default”, but whether a documented business process depends on it and whether that process can run through a narrower path.
Common mistake: Teams often remove one obvious allowance, such as user consent, while leaving other write paths or self-service paths untouched. That leaves the tenant looking hardened on paper while the practical blast radius remains broad.
What good looks like: Ordinary users can do only the minimum required for their role, consent and directory write paths are explicitly governed, and any exception is time-bound, reviewed, and monitored for drift.
Practitioner takeaway: The goal is not to eliminate user convenience entirely, but to make every default permission a deliberate business decision with a clear owner and a visible control boundary.
Related resources from NHI Mgmt Group
- How do you restrict user consent to applications in Microsoft Entra ID?
- How do you apply least privilege to application permissions in Microsoft Entra ID?
- How do you review permissions granted to enterprise applications in Microsoft Entra ID?
- What breaks when user profile filters are too broad in Microsoft Entra ID integrations?