CVE-2026-40379: Microsoft Entra Id

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Exposure of sensitive information to an unauthorized actor in Azure Entra ID allows an unauthorized attacker to perform spoofing over a network.

Affected products

• Microsoft Entra Id: affected versions not specified

Published 2026-05-12. Last modified 2026-06-17.