What is CVE-2025-55241?

CVE-2025-55241 is a critical-severity vulnerability in Microsoft Entra_id, classified under Improper Authentication. CVSS score: 10.0/10. Published 2025-09-04.

How severe is CVE-2025-55241?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2025-55241 known to be exploited?

8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Microsoft Entra_id

CVE-2025-55241

Azure Entra ID Elevation of Privilege Vulnerability

Vulnerability class: Broken Authentication

EPSS: 0.015 (72.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (Technical Description, Third Party Advisory)

Frequently asked questions

What is CVE-2025-55241?: CVE-2025-55241 is a critical-severity vulnerability in Microsoft Entra_id, classified under Improper Authentication. CVSS score: 10.0/10. Published 2025-09-04.
How severe is CVE-2025-55241?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2025-55241 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.