CVE-2026-42901: Microsoft Entra Id

Critical severity, CVSS 10.0. EPSS: 0.5% chance of exploitation in the next 30 days.

Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.

Affected products

• Microsoft Entra Id: affected versions not specified

Published 2026-05-22. Last modified 2026-07-23.