What is CVE-2026-23663?

CVE-2026-23663 is a high-severity vulnerability in Microsoft Global Secure Access, classified under Improper Privilege Management. CVSS score: 7.5/10. Published 2026-05-22.

How severe is CVE-2026-23663?

High severity. CVSS v3 base score is 7.5 out of 10.

Privilege escalation in Microsoft Global Secure Access

CVE-2026-23663

Improper privilege management in Azure Entra ID allows an unauthorized attacker to elevate privileges over a network.

Vulnerability class: Privilege Escalation

Published 2026-05-22 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (44.2th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

Microsoft Global Secure Access (GSA) Information Disclosure Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-23663?: CVE-2026-23663 is a high-severity vulnerability in Microsoft Global Secure Access, classified under Improper Privilege Management. CVSS score: 7.5/10. Published 2026-05-22.
How severe is CVE-2026-23663?: High severity. CVSS v3 base score is 7.5 out of 10.