Microsoft Windows SDK: Schwachstelle ermöglicht Codeausführung
WID-SEC-2026-0082 · first 14.01.2026 · updated 14.01.2026 · CVSS 7,0
What it is about
Windows ist ein Betriebssystem von Microsoft. Ein lokaler Angreifer kann eine Schwachstelle im Microsoft Windows SDK ausnutzen, um beliebigen Programmcode auszuführen.
Under what conditions?
Only with access to the device or an account on it. Often the second step after a phishing email.
What can happen in the worst case
An attacker could use the vulnerability to
- beliebigen Programmcode auszuführen
Am I affected?
Affected according to the BSI:
- Microsoft Windows SDK
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 Leitfaden für Sicherheitsupdates msrc.microsoft.com
CVE: CVE-2026-21219
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.