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.
Published Sep 3, 2026 · corrected/updated Oct 14, 2026 · microsoft azure active directory b2c · evidence confidence high
Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-83711 is a critical public vulnerability record for microsoft azure active directory b2c. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether microsoft azure active directory b2c is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: microsoft/azure active directory b2c. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 10.0, EPSS 0.8%. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-639. Sources contributing to this record: cve_org, epss, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Sep 3, 2026 · NIST NVD
Detected
Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.
Oct 14, 2026 · NIST NVD
Updated
Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.
Affected
- cpe microsoft/azure active directory b2cversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-83711
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-83711
30-day exploitation probability 0.8%
first.org - NIST NVDVulnerability recordCVE-2026-83711
Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.
nvd.nist.gov