Microsoft Windows: Mehrere Schwachstellen
WID-SEC-2026-3243 · first 09.09.2026 · updated 09.09.2026 · CVSS 9,8
What it is about
Windows ist ein Betriebssystem von Microsoft. Ein Angreifer kann mehrere Schwachstellen in verschiedenen Versionen von Microsoft Windows Server, Microsoft Windows 10 und Microsoft Windows 11 ausnutzen, um seine Privilegien zu erhöhen, um einen Denial of Service herbeizuführen, um Informationen offenzulegen und um beliebigen Code auszuführen.
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
- einen Denial of Service herbeizuführen
- Informationen offenzulegen
- beliebigen Code auszuführen
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
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-2026-81963: exploited in the wild according to CISA, in the catalogue since 08.09.2026.
- CVE-2026-85880: exploited in the wild according to CISA, in the catalogue since 08.09.2026.
Information and sources
- Original BSI advisory (WID)
- Microsoft Leitfaden für Sicherheitsupdates msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-68890 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69336 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69337 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69338 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69340 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69341 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69342 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69345 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69346 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69347 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69335 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69349 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69353 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69357 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69360 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69362 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69364 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69769 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69768 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69761 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69758 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69351 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69334 msrc.microsoft.com
- Microsoft Security Advisory CVE-2026-69332 msrc.microsoft.com
and 711 more sources in the original advisory
CVE: CVE-2026-50349, CVE-2026-55007, CVE-2026-56172, CVE-2026-56177, CVE-2026-56198, CVE-2026-57098, CVE-2026-58599, CVE-2026-58600, CVE-2026-62694, CVE-2026-62697, CVE-2026-62706, CVE-2026-62744, CVE-2026-62759, CVE-2026-62762, CVE-2026-62801, CVE-2026-62810, CVE-2026-62813, CVE-2026-65669, CVE-2026-68824, CVE-2026-68825 …
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.