What is CVE-2026-83947?

CVE-2026-83947 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. Azure Event Grid Spoofing Vulnerability

Which CVE IDs does CVE-2026-83947 cover?

CVE-2026-83947 covers the following CVE IDs: CVE-2026-83947. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-83947?

CVE-2026-83947 has a CVSS v3 base score of 7.7, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-83947?

CVE-2026-83947 affects 1 product, including: Azure Event Grid System.

CVE-2026-83947CriticalCVSS 7.7

Azure Event Grid Spoofing Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 8, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-83947 →

📋 Description

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

🎯 Affected products1

Azure Event Grid System

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83947