Microsoft Patchday September 2026
A BSI Warn- und Informationsdienst (WID): Schwachstellen-Informationen (Bürger Cert) ·
Admiralty grading (A–F · 1–6)
Source reliability
- A Completely reliable
- B Usually reliable
- C Fairly reliable
- D Not usually reliable
- E Unreliable
- F Cannot be judged
Information credibility
- 1 Confirmed
- 2 Probably true
- 3 Possibly true
- 4 Doubtful
- 5 Improbable
- 6 Cannot be judged
NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.
Key insight
Microsoft products are central to the company's IT infrastructure (Windows Server, Microsoft 365, Active Directory, Defender); regular patch updates are operationally critical.
Description
Microsoft published security updates for multiple products in September 2026. The notice originates from the German Federal Office for Information Security (BSI) as a warning and information service for organizations. Without specific CVE numbers, CVSS scores, or exploitation details, differentiated severity assessment cannot be made. Organizations should monitor detailed Microsoft Security Updates and execute regular patching processes.
Risk score
- cvss base
- 0.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 0.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational