Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability
CISA KEV deadline
CVE-2026-45659
Assessment context
CISA deadline passed 114 days ago
No access to your tenant or devices. Every item links to its source. What this means
Week 27 · 29 Jun – 5 Jul 2026 UTC · assess the changes, then plan the next dates.
Message CenterExchange
SecuritySharePoint
CISA KEV deadline
CVE-2026-45659
CISA deadline passed 114 days ago
CommunityMSEndpointMgr
CommunityOffice 365 for IT Pros (Tony Redmond)
Community post · Office 365 for IT Pros (Tony Redmond)
CommunityVasil Michev
Community post · Vasil Michev
Updates and guidanceDefender
Product news · Defender for Endpoint iOS releases
Updates and guidanceMicrosoft Graph2 source records
Graph announcement · 2 passages · Microsoft Graph changelog
Publisher announcement group; its passages may describe different API changes
Message CenterOneDrive / SharePoint
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 suite, SharePoint Online, Microsoft OneDrive
Message CenterPurview
Message Center · Plan for change · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 suite, Microsoft Purview
ReleasesTeams
New version · Microsoft Teams releases
Message CenterSharePoint3 source records
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
SharePoint Online
Microsoft marks it a major change
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
SharePoint Online
Microsoft marks it a major change
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
SharePoint Online
Microsoft marks it a major change
CommunityJeffrey Appel
Community post · Jeffrey Appel
CommunityOffice 365 for IT Pros (Tony Redmond)
Community post · Office 365 for IT Pros (Tony Redmond)
Updates and guidanceAzure
Updates and guidanceMicrosoft 365 Blog
Product news · Microsoft 365 Blog
Updates and guidanceMicrosoft Graph6 source records
Graph announcement · 2 passages · Microsoft Graph changelog
Publisher announcement group; its passages may describe different API changes
Graph announcement · 2 passages · Microsoft Graph changelog
Publisher announcement group; its passages may describe different API changes
Graph announcement · 2 passages · Microsoft Graph changelog
Publisher announcement group; its passages may describe different API changes
Updates and guidanceWindows
Windows news · Windows message center
Message CenterMicrosoft 365 Apps / Microsoft 365 Copilot
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 apps, Microsoft 365 Copilot Chat
Message CenterPurview
Notice updated · Reference tenants · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Purview
Message CenterWindows
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Windows
RoadmapCopilot Studio / Microsoft 365 Copilot
Roadmap entry · Microsoft 365 Roadmap · Microsoft 365 Message Center Archive by Merill Fernando
RoadmapMicrosoft 365 Copilot
RoadmapOutlook
Roadmap entry · Microsoft 365 Roadmap · Microsoft 365 Message Center Archive by Merill Fernando
RoadmapPurview
Roadmap entry · Microsoft 365 Roadmap · Microsoft 365 Message Center Archive by Merill Fernando
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.