Vulnerability · Published May 22, 2026 · Assigned by microsoft
CVE-2026-33843Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability
Critical 9.1
In plain English
A critical-severity authentication bypass in Microsoft Entra from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.5%top 58.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized attacker to elevate privileges over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Entra | - |
Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- Microsoft Azure Active Directory B2C Elevation of Privilege Vulnerability vendor-advisory, patch