What is CVE-2026-23660?

CVE-2026-23660 is a high-severity vulnerability in Microsoft Windows Admin Center, classified under Improper Access Control. CVSS score: 7.8/10. Published 2026-03-10.

How severe is CVE-2026-23660?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Microsoft Windows Admin Center

CVE-2026-23660

Improper access control in Azure Portal Windows Admin Center allows an authorized attacker to elevate privileges locally.

Published 2026-03-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (25.2th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Microsoft Windows Admin Center
Microsoft Windows Admin Center In Azure Portal — versions 1.0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23660 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-23660?: CVE-2026-23660 is a high-severity vulnerability in Microsoft Windows Admin Center, classified under Improper Access Control. CVSS score: 7.8/10. Published 2026-03-10.
How severe is CVE-2026-23660?: High severity. CVSS v3 base score is 7.8 out of 10.