Microsoft · Security update · October 13, 2020

KB4580346: October 2020 cumulative update for Windows 10 1607

KB4580346, released October 13, 2020, fixes 42 CVEs across 8 products. One of them is being exploited (CVE-2020-1147); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEV3 publicly disclosed

CVEs closed

7 rated Critical

Exploited

CVE-2020-1147

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.9580

99th percentile

Priority of the 42 CVEs

Patch now 1
                                Urgent 8
                                High 26
                                Routine 7

Applies to

Product	Build after install
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems	14393.3986
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems	14393.3986
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016	14393.3986
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation)	14393.3986
Windows 10 Version 1607 for 32-bit Systems	14393.3986
Windows 10 Version 1607 for x64-based Systems	14393.3986
Windows Server 2016	14393.3986
Windows Server 2016 (Server Core installation)	14393.3986

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Patch now	CVE-2020-1147	.NET Framework	Remote Code Execution	8.8	0.9580	KEVExploited
Urgent	CVE-2020-16896	Windows RDP	Information Disclosure	7.5	0.1260	More likely
Urgent	CVE-2020-16915	Windows Media Player	Remote Code Execution	7.8	0.0984	Exploitation Less Likely
Urgent	CVE-2020-16968	Microsoft Windows Codecs Library	Remote Code Execution	7.8	0.0487	Exploitation Less Likely
Urgent	CVE-2020-16911	Microsoft Graphics Component	Remote Code Execution	8.8	0.0445	Exploitation Less Likely
Urgent	CVE-2020-16967	Microsoft Windows Codecs Library	Remote Code Execution	7.8	0.0421	Exploitation Less Likely
Urgent	CVE-2020-16923	Microsoft Graphics Component	Remote Code Execution	7.8	0.0383	Exploitation Less Likely
Urgent	CVE-2020-16891	Windows Hyper-V	Remote Code Execution	8.8	0.0095	Exploitation Less Likely
Urgent	CVE-2020-16922	Microsoft Windows	Spoofing	5.3	0.0081	More likely
High	CVE-2020-16927	Windows RDP	Denial of Service	7.5	0.0592	Exploitation Less Likely
High	CVE-2020-16894	Windows Hyper-V	Denial of Service	7.7	0.0494	Exploitation Less Likely
High	CVE-2020-1167	Microsoft Graphics Component	Remote Code Execution	7.8	0.0472	Exploitation Less Likely
High	CVE-2020-16924	Microsoft Windows	Remote Code Execution	7.8	0.0412	Exploitation Less Likely
High	CVE-2020-16939	Group Policy	Elevation of Privilege	7.8	0.0242	Exploitation Less Likely
High	CVE-2020-16940	Microsoft Windows	Elevation of Privilege	7.8	0.0155	Exploitation Less Likely
High	CVE-2020-16920	Microsoft Windows	Elevation of Privilege	7.8	0.0142	Exploitation Less Likely
High	CVE-2020-16885	Microsoft Windows	Elevation of Privilege	7.8	0.0102	DisclosedExploitation Less Likely
High	CVE-2020-16935	Microsoft Windows	Elevation of Privilege	7.8	0.0100	Exploitation Less Likely
High	CVE-2020-16916	Windows COM	Elevation of Privilege	7.8	0.0098	Exploitation Less Likely
High	CVE-2020-0764	Microsoft Windows	Elevation of Privilege	7.8	0.0096	Exploitation Less Likely
High	CVE-2020-16902	Windows Installer	Elevation of Privilege	7.8	0.0094	Exploitation Less Likely
High	CVE-2020-16976	Microsoft Windows	Elevation of Privilege	7.8	0.0093	Exploitation Less Likely
High	CVE-2020-16876	Microsoft Windows	Elevation of Privilege	7.1	0.0092	Exploitation Less Likely
High	CVE-2020-16887	Microsoft Windows	Elevation of Privilege	7.8	0.0092	Exploitation Less Likely
High	CVE-2020-16892	Windows Kernel	Elevation of Privilege	7.8	0.0091	Exploitation Less Likely

Released the same day

KB4462175
Microsoft Excel Web App 2010 Service Pack 2, Microsoft Office Web Apps 2010 Service Pack 2
KB4484417
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB4484435
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)
KB4484524
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)
KB4484531
Microsoft SharePoint Server 2010 Service Pack 2
KB4486663
Microsoft Outlook 2010 Service Pack 2 (32-bit editions), Microsoft Outlook 2010 Service Pack 2 (64-bit editions)
KB4486674
Microsoft Office Online Server
KB4486676
Microsoft SharePoint Server 2019
KB4486677
Microsoft SharePoint Enterprise Server 2016
KB4486678
Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition)
KB4486679
Microsoft Word 2016 (32-bit edition), Microsoft Word 2016 (64-bit edition)
KB4486682
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)

Vendor advisory

https://support.microsoft.com/help/4580346

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