Microsoft Entra ID und Azure Resource Manager: Mehrere Schwachstellen ermöglichen Privilegieneskalation
WID-SEC-2026-1636 · first 22.05.2026 · updated 26.05.2026 · CVSS 10,0
What it is about
Microsoft Entra ID (früher Azure Active Directory) ist ein cloudbasierter Identitäts- und Zugriffsverwaltungsdienst von Microsoft. Azure ist eine Cloud Computing-Plattform von Microsoft. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Microsoft Entra ID und Microsoft Azure Resource Manager ausnutzen, um seine Privilegien zu erhöhen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- seine Privilegien zu erhöhen
Am I affected?
Affected according to the BSI:
- Microsoft Entra ID
- Microsoft Azure Resource Manager
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Install the updates provided by the vendor; details in the sources below.
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Microsoft Security Update Guide vom 2026-05-21 msrc.microsoft.com
- Microsoft Security Update Guide vom 2026-05-21 msrc.microsoft.com
CVE: CVE-2026-42901, CVE-2026-47280
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.