Entra ID
CVE-2026-33843: Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability
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
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityCRITICALCVSS 3.1 9.1
EPSS0.86%Chance of exploitation in 30 days
Public exploitNot tracked
FixNot yet
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Microsoft Entra - | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.