What is CVE-2026-66309?

CVE-2026-66309 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. Azure SQL Database Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-66309 cover?

CVE-2026-66309 covers the following CVE IDs: CVE-2026-66309. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-66309?

CVE-2026-66309 has a CVSS v3 base score of 9.1, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-66309?

CVE-2026-66309 affects 1 product, including: Azure SQL Database.

CVE-2026-66309CriticalCVSS 9.1

Azure SQL Database Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

August 20, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-66309 →

📋 Description

Improper access control in Azure SQL Database allows an authorized attacker to elevate privileges over a network.

🎯 Affected products1

Azure SQL Database

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66309