Microsoft · Security update · June 8, 2021

KB5023787: June 2021 security update

KB5023787, released June 8, 2021, fixes 1 CVE across 2 products. None of them is reported as exploited. Patch Radar priority: Routine. The product is no longer supported.

RoutineUnsupported product

CVEs closed

None rated Critical

Exploited

None reported

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.4984

98th percentile

Applies to

Product
Windows 10 for 32-bit Systems
Windows 10 for x64-based Systems

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Routine	CVE-2021-26414	Windows DCOM Server	Security Feature Bypass	4.8	0.4984	Exploitation Less Likely

Released the same day

KB4011698
Microsoft SharePoint Enterprise Server 2013 Service Pack 1
KB5001922
Microsoft SharePoint Enterprise Server 2016
KB5001934
Microsoft Outlook 2013 RT Service Pack 1, Microsoft Outlook 2013 Service Pack 1 (32-bit editions), Microsoft Outlook 2013 Service Pack 1 (64-bit editions)
KB5001939
Microsoft SharePoint Foundation 2013 Service Pack 1
KB5001942
Microsoft Outlook 2016 (32-bit edition), Microsoft Outlook 2016 (64-bit edition)
KB5001943
Office Online Server
KB5001944
Microsoft SharePoint Server 2019
KB5001945
Microsoft SharePoint Server 2019
KB5001946
Microsoft SharePoint Enterprise Server 2016
KB5001947
Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition)
KB5001950
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5001951
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)

Vendor advisory

https://support.microsoft.com/help/5023787

For tools and AI agents

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