Microsoft 365 Apps Version 2607 Build 20228.20190

Current Channel: Version 2607 (Build 20228.20190) Monthly Enterprise Channel: Version 2607 (Build 20228.20188) Monthly Enterprise Channel: Version 2606 (Build 20131.20206) Monthly Enterprise Channel: Version 2605 (Build 20026.20266) Semi-Annual Enterprise Channel (receives Monthly Enterprise Channel builds): Version 2607 (Build 20228.20186) Semi-Annual Enterprise Channel (receives Monthly Enterprise Channel builds): Version 2606 (Build 20131.20206) Semi-Annual Enterprise Channel: Version 2508 (Build 19127.20730) Office 2024 Retail: Version 2607 (Build 20228.20190) Office 2021 Retail: Version 2607 (Build 20228.20190) Office LTSC 2024 Volume Licensed: Version 2408 (Build 17932.20910) Office LTSC 2021 Volume Licensed: Version 2108 (Build 14334.20848) Office 2019 Volume Licensed: Version 1808 (Build 10417.20197) Access CVE-2026-64906 CVE-2026-64908 CVE-2026-64912 CVE-2026-64914 CVE-2026-6491

What changed

Microsoft published the monthly Microsoft 365 Apps security baseline with the affected channels, builds and product CVEs.

Technical details

CVE-2026-64906
CVE-2026-64908
CVE-2026-64912
CVE-2026-64914
CVE-2026-6491

Why it matters

The listed builds and CVEs define the current Office security baseline and must be matched against managed update channels.

Known limitations

Availability, prerequisites and rollout scope remain authoritative in the linked Microsoft documentation.

Now check

Compare deployed Microsoft 365 Apps builds with the listed security builds
Review the product-specific CVEs that apply to the estate
Pilot the affected update channels before broad rollout