What is CVE-2026-33843?

CVE-2026-33843 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-33843 cover?

CVE-2026-33843 covers the following CVE IDs: CVE-2026-33843. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-33843?

CVE-2026-33843 has a CVSS v3 base score of 9.1, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-33843?

CVE-2026-33843 affects 1 product, including: Microsoft Entra ID.

CVE-2026-33843CriticalCVSS 9.1

Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 22, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-33843 →

📋 Description

Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.

🎯 Affected products1

Microsoft Entra ID

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33843