Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
CISA KEV deadline
CVE-2026-58644
Assessment context
CISA deadline passed 99 days ago
Weekly briefing
Week 29 · 13 Jul – 19 Jul 2026 UTC · assess the changes, then plan the next dates.
All dated changes in this period
254 source records · 128 groupsMessage CenterWindows
MC1432461: Out-of-band update to address Windows update issue affecting some devices with Intel IPF driver
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Windows
Assessment context
Microsoft marks it a major change
ReleasesWindows
KB5121767 · Windows 11, version 24H2 +1
Out-of-band release
Windows 11, version 24H2, Windows 11, version 25H2
Assessment context
Released outside the monthly cycle
Updates and guidanceWindows
Out-of-band update to address Windows update issue affecting some devices with Intel IPF driver
Windows news · Windows message center
ReleasesPSParseHTML
PSParseHTML 2.2.0
Tool release · PSParseHTML package releases
ReleasesPester
Message CenterExchange
MC1430531: Microsoft Outlook: Meeting Insight is retiring
Message Center · Plan for change · Microsoft 365 Message Center Archive by Merill Fernando
Exchange Online
Assessment context
Microsoft marks it a major change
Message CenterTeams2 source records
Message Center · Plan for change · 2 entries
- MC1430529: Teams frontline mobile onboarding guide retirement
Message Center · Plan for change · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Teams
Assessment context
Microsoft marks it a major change
- MC1430523: Microsoft Teams: Enhanced file filtering in channel Shared tabs
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Teams
CommunityNathan McNulty
From Initial Access to Persistence: Abusing Synced Passkeys in Azure
Community post · Nathan McNulty
CommunityOffice 365 for IT Pros (Tony Redmond)
The Demise of the OWA Light Client
Community post · Office 365 for IT Pros (Tony Redmond)
Updates and guidanceAzure7 source records
Product news · 7 entries
- Az Update - Week 2 of the return editions
Product news · ITOps Talk Blog
- Azure Elastic SAN: Pooled, Cloud-Native Block Storage That Actually Acts Like a SAN
Product news · ITOps Talk Blog
Show the other 4 entries
- Network Security Perimeter for Azure Event Hubs: Hardening Your Data Streams
Product news · ITOps Talk Blog
Updates and guidanceMicrosoft 365 Blog
What's New in PowerPoint Craft
Product news · Microsoft 365 Blog
Updates and guidanceMicrosoft Graph6 source records
Graph announcement · 5 passages · 2 entries
- Calendar (v1.0): 5 API change passages
Graph announcement · 5 passages · Microsoft Graph changelog
Assessment context
Publisher announcement group; its passages may describe different API changes
- Mailbox import and export (beta): 1 API change passage
Graph announcement · 1 passages · Microsoft Graph changelog
Assessment context
Publisher announcement group; its passages may describe different API changes
Message CenterMicrosoft 365 Apps / Microsoft 365 Copilot
MC1430537: Copilot in Excel: Brand Kit skill
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 apps, Microsoft 365 Copilot Chat
Message CenterMicrosoft 365 Apps
MC1430543: Microsoft Excel: Summarize text columns and generate categories with Copilot
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 apps
Message CenterMicrosoft 365 Copilot / Purview
MC1301714: Microsoft Purview | Data Loss Prevention- DLP to restrict processing external emails in M365 Copilot and Copilot Chat
Notice updated · Reference tenants · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Purview, Microsoft 365 Copilot Chat
Message CenterOneDrive2 source records
Message Center · Stay informed · 2 entries
- MC1430530: Microsoft OneDrive: Exclude specific folders from syncing
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft OneDrive
- MC1430540: Find your group sites faster with the new My Sites tab in OneDrive for iOS
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft OneDrive
Message CenterPurview
MC1430534: Microsoft Purview: Insider Risk Management - Expanding note capabilities across alerts and cases
Message Center · Stay informed · Reference tenants · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Purview
RoadmapMicrosoft 365 Apps / Microsoft 365 Copilot / Purview
RoadmapMicrosoft 365 Copilot
RoadmapOutlook
Outlook: All Day events to show up more clearly in the Mail module Calendar Preview
Roadmap entry · Microsoft 365 Roadmap · Microsoft 365 Message Center Archive by Merill Fernando
RoadmapTeams
Microsoft Teams: Breakout rooms up to 1,000 Attendees in Teams meetings
Roadmap entry · Microsoft 365 Roadmap · Microsoft 365 Message Center Archive by Merill Fernando
RoadmapViva
Microsoft Viva: Copilot Analytics - Agent 365 dashboard for managers
Roadmap entry · Microsoft 365 Roadmap · Microsoft 365 Message Center Archive by Merill Fernando
SecurityCloudflare
WAF - WAF Release - 2026-07-17 - Emergency
Security advisory · Cloudflare WAF changelog
Assessment context
Groups collect records about the same product or named security topic on one UTC date. Open a record for its source and history; grouping alone does not establish a shared cause or impact.