Threat landscape
high exploited

Microsoft Windows : Mehrere Schwachstellen

WID-SEC-2026-0083 · first 14.01.2026 · updated 03.03.2026 · CVSS 8,8

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What it is about

Windows ist ein Betriebssystem von Microsoft. Ein Angreifer kann mehrere Schwachstellen in verschiedenen Versionen von Microsoft Windows und Microsoft Windows Server ausnutzen,, um erweiterte Privilegien, einschließlich Benutzer- und Administratorrechten, zu erlangen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen und Daten zu manipulieren.

Under what conditions?

The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.

Am I affected?

Affected according to the BSI:

  • Hitachi Storage
  • Microsoft Windows 11 Version 25H2
  • Microsoft Windows Server 2016
  • Microsoft Windows 10 Version 1809
  • Microsoft Windows Server 2019
  • Microsoft Windows 10 Version 21H2
  • Microsoft Windows 10 Version 22H2
  • Microsoft Windows 11 Version 23H2
  • Microsoft Windows Server 2022 23H2 Edition
  • Microsoft Windows 11 Version 24H2
  • Microsoft Windows Server 2025
  • Microsoft Windows Server 2022

and 5 more

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?

  • CVE-2026-20805: exploited in the wild according to CISA, in the catalogue since 13.01.2026.

Information and sources

CVE: CVE-2023-31096, CVE-2024-55414, CVE-2026-0386, CVE-2026-20804, CVE-2026-20805, CVE-2026-20808, CVE-2026-20809, CVE-2026-20810, CVE-2026-20811, CVE-2026-20812, CVE-2026-20814, CVE-2026-20815, CVE-2026-20816, CVE-2026-20817, CVE-2026-20818, CVE-2026-20819, CVE-2026-20820, CVE-2026-20821, CVE-2026-20822, CVE-2026-20823 …

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.

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