Microsoft Azure, Copilot und Entra: Mehrere Schwachstellen
WID-SEC-2026-0201 · first 23.01.2026 · updated 26.01.2026 · CVSS 9,9
What it is about
Azure ist eine Cloud Computing-Plattform von Microsoft. Microsoft Copilot ist ein KI-Assistent, der in verschiedene Microsoft-Produkte integriert werden kann. Microsoft Entra ID (früher Azure Active Directory) ist ein cloudbasierter Identitäts- und Zugriffsverwaltungsdienst von Microsoft. Ein entfernter Angreifer kann mehrere Schwachstellen in Microsoft Azure, Microsoft 365 Copilot und Microsoft Entra ausnutzen, um seine Privilegien zu erhöhen, Cross-Site-Scripting-Angriffe durchzuführen und vertrauliche Informationen offenzulegen.
Under what conditions?
Over the network.
What can happen in the worst case
An attacker could use the vulnerability to
- seine Privilegien zu erhöhen
- Cross-Site-Scripting-Angriffe durchzuführen
- vertrauliche Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Microsoft Azure Logic Apps
- Microsoft Azure Account
- Microsoft 365 Copilot Word
- Microsoft Azure Data Explorer
- Microsoft Azure Resource Manager
- Microsoft Entra ID
- Microsoft Azure Front Door
- Microsoft 365 Copilot
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 2026-01-22 msrc.microsoft.com
- Azure Logic Apps Elevation of Privilege Vulnerability vom 2026-01-22 msrc.microsoft.com
- Microsoft Account Spoofing Vulnerability vom 2026-01-22 msrc.microsoft.com
- Word Copilot Information Disclosure Vulnerability vom 2026-01-22 msrc.microsoft.com
- Azure Data Explorer Information Disclosure Vulnerability vom 2026-01-22 msrc.microsoft.com
- Azure Resource Manager Elevation of Privilege Vulnerability vom 2026-01-22 msrc.microsoft.com
- Azure Entra ID Elevation of Privilege Vulnerability vom 2026-01-22 msrc.microsoft.com
- Azure Front Door Elevation of Privilege Vulnerability vom 2026-01-22 msrc.microsoft.com
- M365 Copilot Information Disclosure Vulnerability vom 2026-01-22 msrc.microsoft.com
CVE: CVE-2026-21227, CVE-2026-21264, CVE-2026-21521, CVE-2026-21524, CVE-2026-24304, CVE-2026-24305, CVE-2026-24306, CVE-2026-24307
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.