Microsoft Windows Admin Center: Schwachstelle ermöglicht Privilegieneskalation
WID-SEC-2026-0470 · first 20.02.2026 · updated 20.02.2026 · CVSS 8,8
What it is about
Microsoft Windows Admin Center ist ein webbasiertes Tool zur Verwaltung von Windows Servern, Clustern und PCs. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Microsoft Windows Admin Center ausnutzen, um seine Privilegien zu erhöhen.
Under what conditions?
Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.
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 Windows Admin Center <2511
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Microsoft Windows Admin Center 2511
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 Update Guide vom 2026-02-19 msrc.microsoft.com
CVE: CVE-2026-26119
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.