CVE-2025-59273: Microsoft Azure Event Grid

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper access control in Azure Event Grid allows an unauthorized attacker to elevate privileges over a network.

Affected products

• Microsoft Azure Event Grid: affected versions not specified

Published 2025-10-23. Last modified 2026-10-08.