EIDAUTH-005: Users with No MFA Methods Registered
- Platform
- Entra ID / M365
- Category
- Entra ID Authentication Methods & MFA
- Severity
- Critical
- Zero Trust pillar
- Identity (weight 3)
- Golden fixtures
- 3
- Branch coverage
- Observed: fixtures prove the verdicts they exercise
- Provenance
- baseline
What it checks
Users without any registered MFA methods cannot satisfy MFA challenges and represent critical security gaps. These accounts are fully exposed to credential-based attacks including password spraying, phishing, and brute-force attacks. Immediate remediation is required to ensure all active accounts have at least one MFA method enrolled.
Recommended value
Zero active users without at least one MFA method registered
Remediation
Query user registration details via Entra ID > Protection > Authentication methods > User registration details to identify users with no methods. Enforce MFA registration through a Conditional Access policy targeting unregistered users. Use Temporary Access Pass to assist users who need to bootstrap their MFA registration.
Fixture-proven verdicts
Every verdict below is proven by a golden fixture in the module's gating test suite. This table derives from the last green run; it cannot be edited by hand.
| Scenario | Expected verdict |
|---|---|
| clean | PASS |
| known-bad | FAIL |
| no-data | Not Assessed |
Framework mappings
- NIST SP 800-53
- IA-2(1), IA-2(2)
- CIS M365 Benchmark
- 5.2.2.1
- MITRE ATT&CK
- T1078, T1110
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Guerrilla is written and maintained by Jim Tyler. This copy lives on jimtyler.org; the project also publishes at guerrilla.army.