Weekly briefing
Week 39 · 21 Sep – 27 Sep 2026 UTC · assess the changes, then plan the next dates.
Coming up4
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Microsoft SharePoint Code Injection Vulnerability
CVE-2026-65660
Same day: Recorded guidance date: Teams Rooms app release notes
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Retirement: 11 products
Azure API for FHIR; Azure API for FHIR Gen 1 offering; Azure Container Registry ACR 2017-03-01-(GA) API; Azure FXT Edge Filer; Azure Maps Web SDK v2 Subversion (v2.0~v2.0.32) and Service Module Retirement; Azure Virtual Desktop (Classic); Container Log V1; Get AlertSummary API; Service Bus Control…
Same day: Recorded guidance date: Azure Virtual Desktop changes; Message Center action date: MC1172532: (Updated) Action Required: Update active Exchange Web Services Applications; Message Center action date: MC1191230: Action Required: Update active Exchange Web Services Applications; Message Center action date: MC1447678: (Updated) Microsoft Exchange Online: Prepare for Exchange Web Services retirement with EWSAllowedAppIDs; Message Center action date: MC1465773: Microsoft Viva Engage: Microsoft Entra permissions required for community and membership administration
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CSP software pricing update effective October 1, 2026
Microsoft Partner Center announcements
Same day: Retirement: 5 products; Recorded guidance date: Exchange Web Services retirement announcement; Message Center action date: MC1440980: (Updated) Microsoft Teams: Update the Teams mobile app to maintain Calendar functionality; Message Center action date: MC1446796: (Updated) Migrate Free/Busy, MailTips, and Calendar Sharing before EWS deprecation; Message Center action date: MC1462469: Microsoft Teams and Google Calendar sync retirement; Message Center action date: MC1466302: Project Online Essentials reaches End of Life on October 1, 2026: Action required; Message Center action date: MC1469564: Microsoft Publisher: Reminder that support ends in October 2026; Message Center action date: MC1469565: Microsoft Purview | Data Lifecycle Management - Graph API Support for archive mailboxes
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Patch Tuesday, 13 October 2026
The second Tuesday of the month, when Microsoft releases security updates for Windows, Office, and servers.
Changed4
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Microsoft SharePoint Code Injection Vulnerability
CVE-2026-65660
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WAF - WAF Release - 2026-09-25 - Emergency
Cloudflare WAF changelog
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GitLab · 2 security records
GitLab patch releases
How this list is chosen
Changes from 21 Sep 2026 – 27 Sep 2026 UTC and dates due up to 27 Oct 2026. Dates are the source's own, or labelled as the day ChangeIntel observed a change; never inferred effective dates.
Ranked by kind: exploited vulnerabilities, then up to 3 dates, open known issues, and other notable changes, with at most one entry per feed. Service incidents are on the status board; security baseline downloads, first captures of a document, and metadata-only documentation checks are left out. This is a view of retained evidence, not a reconstruction of everything known at the time.
The briefing is selective. Browse every dated change, review upcoming dates or check the period's coverage.