Vulnerability Intelligence Report
Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability
CVE-2026-83711
Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.
No Active Exploit Signals
CVSS Base Score
10.0
CRITICAL
Exploitability:3.9
Impact Score:5.8
EPSS Probability:0.81%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-639 ↗CWE-639: Authorization Bypass Through User-Controlled Key
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Entra | - (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.815%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-08-31T22:43:34 |
| Published | 2026-09-03T22:59:15 |
| Patch Date | 2026-09-08 |
| Last Updated | 2026-10-01T23:01:19 |
Community Chatter & Buzz