Threat landscape
high

Microsoft Windows und Windows Server: Mehrere Schwachstellen

WID-SEC-2026-0661 · first 11.03.2026 · updated 06.07.2026 · CVSS 8,8

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What it is about

Windows ist ein Betriebssystem von Microsoft. Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows und Windows Server ausnutzen, um seine Privilegien zu erhöhen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Sicherheitsvorkehrungen zu umgehen, um Informationen offenzulegen, und um falsche Informationen darzustellen.

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

  • seine Privilegien zu erhöhen
  • beliebigen Programmcode auszuführen
  • einen Denial of Service Angriff durchzuführen
  • Sicherheitsvorkehrungen zu umgehen
  • Informationen offenzulegen
  • falsche Informationen darzustellen

Am I affected?

Affected according to the BSI:

  • Hitachi Storage
  • Microsoft Windows App Client for Desktop
  • Microsoft Windows Server 2012
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016
  • Microsoft Windows 10 Version 1607
  • Microsoft Windows 10 Version 1809
  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2022
  • Microsoft Windows 10 Version 21H2
  • Microsoft Windows 10 Version 22H2
  • Microsoft Windows 11 Version 23H2

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?

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

CVE: CVE-2026-23656, CVE-2026-23667, CVE-2026-23668, CVE-2026-23669, CVE-2026-23671, CVE-2026-23672, CVE-2026-23673, CVE-2026-23674, CVE-2026-24282, CVE-2026-24283, CVE-2026-24285, CVE-2026-24287, CVE-2026-24288, CVE-2026-24289, CVE-2026-24290, CVE-2026-24291, CVE-2026-24292, CVE-2026-24293, CVE-2026-24294, CVE-2026-24295 …

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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