Microsoft Windows Admin Center: Schwachstelle ermöglicht Cross-Site Scripting
WID-SEC-2026-2392 · first 17.07.2026 · updated 17.07.2026 · CVSS 6,1
What it is about
Microsoft Windows Admin Center ist ein webbasiertes Tool zur Verwaltung von Windows Servern, Clustern und PCs. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Microsoft Windows Admin Center ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen.
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
- einen Cross-Site Scripting Angriff durchzuführen
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 Security Advisory CVE-2026-58643 vom 2026-07-16 msrc.microsoft.com
CVE: CVE-2026-58643
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.