Microsoft · Security update · June 13, 2023

KB5025903: June 2023 security update

KB5025903, released June 13, 2023, fixes 2 CVEs in Microsoft Exchange Server 2016 Cumulative Update 23. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

None rated Critical

Exploited

None reported

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.8145

99th percentile

Priority of the 2 CVEs

Patch now 0
                                Urgent 2
                                High 0
                                Routine 0

Applies to

Product
Microsoft Exchange Server 2016 Cumulative Update 23

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Urgent	CVE-2023-32031	Microsoft Exchange Server	Remote Code Execution	8.8	0.8145	More likely
Urgent	CVE-2023-28310	Microsoft Exchange Server	Remote Code Execution	8.0	0.2500	More likely

Released the same day

KB5002401
Microsoft Office Online Server
KB5002402
Microsoft SharePoint Server 2019
KB5002403
Microsoft SharePoint Server 2019
KB5002404
Microsoft SharePoint Enterprise Server 2016
KB5002405
Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition)
KB5002414
Microsoft Excel 2013 RT Service Pack 1, Microsoft Excel 2013 Service Pack 1 (32-bit editions), Microsoft Excel 2013 Service Pack 1 (64-bit editions)
KB5002416
Microsoft SharePoint Server Subscription Edition
KB5026261
Microsoft Exchange Server 2019 Cumulative Update 12, Microsoft Exchange Server 2019 Cumulative Update 13
KB5026454
Microsoft Visual Studio 2013 Update 5
KB5026455
Microsoft Visual Studio 2015 Update 3
KB5027119
Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 22H2 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 22H2 for x64-based Systems
KB5027123
Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems, Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems, Microsoft .NET Framework 4.8 on Windows Server 2016 and 1 more

Vendor advisory

https://support.microsoft.com/help/5025903

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