Microsoft Azure Functions, Front Door und ARC: Mehrere Schwachstellen
WID-SEC-2026-0329 · first 06.02.2026 · updated 09.02.2026 · CVSS 9,8
What it is about
Azure ist eine Cloud Computing-Plattform von Microsoft. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Microsoft Azure Functions, Front Door und ARC ausnutzen, um seine Privilegien zu erhöhen und vertrauliche Informationen offenzulegen.
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
- vertrauliche Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Microsoft Azure Functions
- Microsoft Azure Front Door
- Microsoft Azure ARC
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 Leitfaden für Sicherheitsupdates msrc.microsoft.com
CVE: CVE-2026-21532, CVE-2026-24300, CVE-2026-24302
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.