What is CVE-2025-59218?

CVE-2025-59218 is a critical-severity vulnerability in Microsoft Entra Id, classified under Improper Access Control. CVSS score: 9.6/10. Published 2025-10-09.

How severe is CVE-2025-59218?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Is CVE-2025-59218 known to be exploited?

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

Vulnerability in Microsoft Entra Id

CVE-2025-59218

Azure Entra ID Elevation of Privilege Vulnerability

Published 2025-10-09 · last modified 2026-10-08.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.007 (50.9th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: -0.000

Affected products

Weakness classification (CWE)

CWE-284 — Improper Access Control

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59218 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-59218?: CVE-2025-59218 is a critical-severity vulnerability in Microsoft Entra Id, classified under Improper Access Control. CVSS score: 9.6/10. Published 2025-10-09.
How severe is CVE-2025-59218?: Critical severity. CVSS v3 base score is 9.6 out of 10.
Is CVE-2025-59218 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.