Microsoft Windows Dienste: Mehrere Schwachstellen
WID-SEC-2026-2947 · first 21.08.2026 · updated 21.08.2026 · CVSS 7,1
What it is about
Windows ist ein Betriebssystem von Microsoft. Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows Server 2012 R2, Windows Server 2012, Windows Server 2016, Windows 10, Windows 11, Windows Server 2025, Windows Server 2022, Windows Server 2019, Microsoft Windows Remote Help und Windows App für Mac ausnutzen, um Administratorrechte zu erlangen, Spoofing-Angriffe durchzuführen, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand auszulösen.
Under what conditions?
The BSI does not name any particular preconditions.
What can happen in the worst case
An attacker could use the vulnerability to
- Administratorrechte zu erlangen
- Spoofing-Angriffe durchzuführen
- vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand auszulösen
Am I affected?
Affected according to the BSI:
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2012
- Microsoft Windows Server 2016
- Microsoft Windows Server 2025
- Microsoft Windows 10
- Microsoft Windows 11
- Microsoft Windows Server 2022
- Microsoft Windows Server 2019
- Microsoft Windows Remote Help
- Microsoft Windows App for Mac
- Microsoft Windows Telephony Service
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-2026-55013 vom 2026-08-20 msrc.microsoft.com
- Microsoft CVE-2026-55015 vom 2026-08-20 msrc.microsoft.com
- Microsoft CVE-2026-62727 vom 2026-08-20 msrc.microsoft.com
- Microsoft CVE-2026-69550 vom 2026-08-20 msrc.microsoft.com
CVE: CVE-2026-55013, CVE-2026-55015, CVE-2026-62727, CVE-2026-69550
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.