Microsoft · Security update · September 12, 2017

KB4040960: September 2017 security update

KB4040960, released September 12, 2017, fixes 1 CVE across 6 products. One of them is being exploited (CVE-2017-8759); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

Patch now1 on CISA KEVUnsupported product

CVEs closed

None rated Critical

Exploited

CVE-2017-8759

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.8870

99th percentile

Applies to

Product
Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1
Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1
Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2
Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Patch now	CVE-2017-8759	.NET Framework	Remote Code Execution	n/a	0.8870	KEVExploited

Released the same day

KB3114428
Microsoft Publisher 2007 Service Pack 3
KB3141537
Microsoft Publisher 2010 Service Pack 2 (32-bit editions), Microsoft Publisher 2010 Service Pack 2 (64-bit editions)
KB3170455
Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows 8.1 for 32-bit systems and 16 more
KB3191831
Excel Services on Microsoft SharePoint Server 2007 Service Pack 3 (32-bit editions), Excel Services on Microsoft SharePoint Server 2007 Service Pack 3 (64-bit editions)
KB3203474
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB3212225
Microsoft Excel for Mac 2011, Microsoft Office for Mac 2011
KB3213551
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB3213564
Microsoft Office 2013 RT Service Pack 1, Microsoft Office 2013 Service Pack 1 (32-bit editions), Microsoft Office 2013 Service Pack 1 (64-bit editions)
KB3213626
Microsoft Office 2010 Service Pack 2 (32-bit editions), Microsoft Office 2010 Service Pack 2 (64-bit editions)
KB3213631
Microsoft Office 2010 Service Pack 2 (32-bit editions), Microsoft Office 2010 Service Pack 2 (64-bit editions)
KB3213638
Microsoft Office 2010 Service Pack 2 (32-bit editions), Microsoft Office 2010 Service Pack 2 (64-bit editions)
KB3213641
Microsoft Office 2007 Service Pack 3

Vendor advisory

https://support.microsoft.com/help/4040960

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