CVE-2026-83947: Microsoft Azure Event Grid System

High severity, CVSS 7.7. EPSS: 0.4% chance of exploitation in the next 30 days.

Missing authorization in Azure Event Grid allows an authorized attacker to perform spoofing over a network.

Affected products

• Microsoft Azure Event Grid System: affected versions not specified

Published 2026-10-08. Last modified 2026-10-09.