Microsoft · Security update · December 8, 2020

KB4592440: December 2020 cumulative update for Windows 10 1809

KB4592440, released December 8, 2020, fixes 20 CVEs across 9 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

2 rated Critical

Exploited

None reported

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.2384

97th percentile

Priority of the 20 CVEs

Patch now 0
                                Urgent 3
                                High 13
                                Routine 4

Applies to

Product	Build after install
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems	17763.1637
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems	17763.1637
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems	17763.1637
Microsoft Edge (EdgeHTML-based) on Windows Server 2019	17763.1637
Windows 10 Version 1809 for 32-bit Systems	17763.1637
Windows 10 Version 1809 for ARM64-based Systems	17763.1637
Windows 10 Version 1809 for x64-based Systems	17763.1637
Windows Server 2019	17763.1637
Windows Server 2019 (Server Core installation)	17763.1637

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Urgent	CVE-2020-17096	Windows SMB	Remote Code Execution	7.5	0.1954	More likely
Urgent	CVE-2020-17095	Windows Hyper-V	Remote Code Execution	8.5	0.0503	Exploitation Less Likely
Urgent	CVE-2020-17131	Microsoft Edge (HTML-based)	Remote Code Execution	4.2	0.0205	Exploitation Less Likely
High	CVE-2020-17103	Microsoft Windows	Elevation of Privilege	7.0	0.2384	Exploitation Less Likely
High	CVE-2020-17140	Windows SMB	Information Disclosure	8.1	0.1535	Exploitation Less Likely
High	CVE-2020-17136	Microsoft Windows	Elevation of Privilege	7.8	0.1385	Exploitation Less Likely
High	CVE-2020-16960	Windows Backup Engine	Elevation of Privilege	7.8	0.0127	Exploitation Less Likely
High	CVE-2020-16961	Windows Backup Engine	Elevation of Privilege	7.8	0.0127	Exploitation Less Likely
High	CVE-2020-17134	Microsoft Windows	Elevation of Privilege	7.8	0.0121	Exploitation Less Likely
High	CVE-2020-16958	Windows Backup Engine	Elevation of Privilege	7.8	0.0114	Exploitation Less Likely
High	CVE-2020-16959	Windows Backup Engine	Elevation of Privilege	7.8	0.0114	Exploitation Less Likely
High	CVE-2020-16962	Windows Backup Engine	Elevation of Privilege	7.8	0.0114	Exploitation Less Likely
High	CVE-2020-16963	Windows Backup Engine	Elevation of Privilege	7.8	0.0114	Exploitation Less Likely
High	CVE-2020-16964	Windows Backup Engine	Elevation of Privilege	7.8	0.0114	Exploitation Less Likely
High	CVE-2020-17092	Microsoft Windows	Elevation of Privilege	7.8	0.0104	Exploitation Less Likely
High	CVE-2020-17139	Microsoft Windows	Security Feature Bypass	7.8	0.0092	Exploitation Less Likely
Routine	CVE-2020-17094	Windows Error Reporting	Information Disclosure	5.5	0.0140	Exploitation Less Likely
Routine	CVE-2020-17098	Microsoft Graphics Component	Information Disclosure	5.5	0.0140	Exploitation Less Likely
Routine	CVE-2020-17097	Windows Media	Elevation of Privilege	3.3	0.0105	Exploitation Less Likely
Routine	CVE-2020-17099	Windows Lock Screen	Security Feature Bypass	6.8	0.0100	Exploitation Less Likely

Released the same day

KB4486696
Microsoft SharePoint Foundation 2013 Service Pack 1
KB4486697
Microsoft SharePoint Server 2010 Service Pack 2
KB4486698
Microsoft Office 2010 Service Pack 2 (32-bit editions), Microsoft Office 2010 Service Pack 2 (64-bit editions)
KB4486704
Microsoft Office Web Apps 2010 Service Pack 2
KB4486721
Microsoft SharePoint Enterprise Server 2016
KB4486732
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)
KB4486742
Microsoft Outlook 2010 Service Pack 2 (32-bit editions), Microsoft Outlook 2010 Service Pack 2 (64-bit editions)
KB4486748
Microsoft Outlook 2016 (32-bit edition), Microsoft Outlook 2016 (64-bit edition)
KB4486751
Microsoft SharePoint Server 2019
KB4486752
Microsoft SharePoint Server 2019
KB4486753
Microsoft SharePoint Enterprise Server 2016
KB4493138
Microsoft SharePoint Foundation 2013 Service Pack 1

Vendor advisory

https://support.microsoft.com/help/4592440

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