CVE-2026-83711 Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability

{
  "id": "21f03c79851616d2b3aa7c16fe3d0a9b3dd008b154e809328b6fb231a29b97f6",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83711",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-83711 Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability",
    "summary": "A user-controlled key can enable an authorization bypass and privilege elevation over a network in Microsoft Azure Active Directory B2C.",
    "evidence": "Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.",
    "products": [
      {
        "name": {
          "value": "Microsoft Azure Active Directory B2C",
          "evidence": "CVE-2026-83711 Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-83711",
        "evidence": "CVE-2026-83711 Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 27206,
  "published_at": "2026-09-08T14:00:00+00:00"
}