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Microsoft Word für Android und 365 Copilot: Mehrere Schwachstellen ermöglichen Darstellen falscher Informationen

WID-SEC-2026-1484 · first 13.05.2026 · updated 13.05.2026 · CVSS 7,7

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What it is about

Microsoft Word ist ein Textverarbeitungsprogramm der Firma Microsoft für die Windows-Betriebssysteme und Mac OS. Microsoft Copilot ist ein KI-Assistent, der in verschiedene Microsoft-Produkte integriert werden kann. Ein Angreifer kann mehrere Schwachstellen in Microsoft Word für Android und Microsoft 365 Copilot ausnutzen, um falsche Informationen darzustellen.

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

  • falsche Informationen darzustellen

Am I affected?

Affected according to the BSI:

  • Microsoft Word for Android
  • Microsoft 365 Copilot 365 Copilot's Business Chat
  • Microsoft 365 Copilot for Android
  • Microsoft 365 Copilot for Desktop

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-2026-41100, CVE-2026-41101, CVE-2026-41614, CVE-2026-42832

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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