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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.

PUBLISHED Reserved 2026-03-24 | Published 2026-05-22 | Updated 2026-06-05 | Assigner microsoft




CRITICAL: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Problem types

CWE-288: Authentication Bypass Using an Alternate Path or Channel

Product status

-
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33843 (Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability) vendor-advisory patch

cve.org (CVE-2026-33843)

nvd.nist.gov (CVE-2026-33843)

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