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Microsoft Security Response CenterCVE-2026-83711

Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability

Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.

Read the vendor bulletin Get alerts for Microsoft Azure Active Directory B2C
10.0CVSS out of 10Critical severity
Scope

What the vendor says is affected

  • Microsoft Azure Active Directory B2C
Update history

What changed in later vendor updates

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

    • The vendor changed the advisory's last-updated date.
Timeline

When this advisory changed

  1. Added to SecurityAlert

    We collected the advisory from the official source.

  2. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-83711View CVSS, KEV, EPSS, and threat context
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