Microsoft Dataverse: Schwachstelle ermöglicht Privilegieneskalation
WID-SEC-2026-3459 · first 18.09.2026 · updated 18.09.2026 · CVSS 9,0
What it is about
Dataverse ermöglicht die Integration von Daten aus verschiedenen Quellen in einen einzigen Speicher. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Microsoft Dataverse 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 Dataverse
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
- Microsoft Security Advisory CVE-2026-65772 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-77908 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-65818 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-77903 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-77897 msrc.microsoft.com
CVE: CVE-2026-77903
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.