CVE-2026-33843 CRITICAL

CVE-2026-33843: Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability

Vendor Microsoft
Product Microsoft Entra
Weakness CWE-288
Published May 22, 2026
Last update June 9, 2026
View on NVD All CVEs

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

May 22, 2026 CVE published
June 9, 2026 Record updated