Microsoft Windows 11 und Windows Server 2025: Schwachstelle ermöglicht Umgehen der Laufwerksverschlüsselung
WID-SEC-2026-1609 · first 20.05.2026 · updated 23.06.2026 · CVSS 6,8
What it is about
Windows ist ein Betriebssystem von Microsoft. Ein Angreifer mit physischem Zugriff kann eine Schwachstelle in Microsoft Windows 11 und Microsoft Windows Server 2025 ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
Under what conditions?
Only with direct access to the device, for example via USB or on site.
What can happen in the worst case
An attacker could use the vulnerability to
- Sicherheitsvorkehrungen zu umgehen
Am I affected?
Affected according to the BSI:
- Microsoft Windows 11
- Microsoft Windows Server 2025
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 CVE-2026-45585 vom 2026-05-19 msrc.microsoft.com
- PoC github.com
CVE: CVE-2026-45585
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.