Microsoft Windows: Mehrere Schwachstellen
WID-SEC-2026-2401 · first 20.07.2026 · updated 20.07.2026 · CVSS 7,1
What it is about
Windows ist ein Betriebssystem von Microsoft. Microsoft Windows Admin Center ist ein webbasiertes Tool zur Verwaltung von Windows Servern, Clustern und PCs. Ein Angreifer kann mehrere Schwachstellen im Microsoft Windows Backup Service, Microsoft Windows Admin Center und Microsoft Windows Remote Desktop Web Client ausnutzen, um Informationen offenzulegen und um erweiterte Rechte zu erlangen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- Informationen offenzulegen
- erweiterte Rechte zu erlangen
Am I affected?
Affected according to the BSI:
- Microsoft Windows 10
- Microsoft Windows 11
- Microsoft Windows Admin Center
- Microsoft Windows Remote Desktop Web Client
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 Advisory CVE-2026-58598 vom 2026-07-19 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-56171 vom 2026-07-19 msrc.microsoft.com
CVE: CVE-2026-56171, CVE-2026-58598
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.