Microsoft · Security update · September 8, 2020

KB4577066: September 2020 security update

KB4577066, released September 8, 2020, fixes 49 CVEs across 9 products. One of them is being exploited (CVE-2020-0878); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEVKnown ransomware use

CVEs closed

6 rated Critical

Exploited

CVE-2020-0878

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.4603

98th percentile

Priority of the 49 CVEs

Patch now 1
                                Urgent 11
                                High 23
                                Routine 14

Applies to

Product
Internet Explorer 11 on Windows 8.1 for 32-bit systems
Internet Explorer 11 on Windows 8.1 for x64-based systems
Internet Explorer 11 on Windows RT 8.1
Internet Explorer 11 on Windows Server 2012 R2
Windows 8.1 for 32-bit systems
Windows 8.1 for x64-based systems
Windows RT 8.1
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Patch now	CVE-2020-0878	Microsoft Browsers	Remote Code Execution	4.2	0.0270	KEVRansomwareExploited
Urgent	CVE-2020-0922	Microsoft Windows	Remote Code Execution	8.8	0.0491	Exploitation Less Likely
Urgent	CVE-2020-0664	Windows Active Directory	Information Disclosure	6.5	0.0400	More likely
Urgent	CVE-2020-1285	Microsoft Graphics Component	Remote Code Execution	8.4	0.0396	Exploitation Less Likely
Urgent	CVE-2020-0856	Windows Active Directory	Information Disclosure	6.5	0.0390	More likely
Urgent	CVE-2020-1252	Microsoft Windows	Remote Code Execution	7.8	0.0388	Exploitation Less Likely
Urgent	CVE-2020-1508	Microsoft Windows	Remote Code Execution	7.6	0.0326	Exploitation Less Likely
Urgent	CVE-2020-1593	Microsoft Windows	Remote Code Execution	7.6	0.0282	Exploitation Less Likely
Urgent	CVE-2020-0941	Windows Kernel	Information Disclosure	5.5	0.0113	More likely
Urgent	CVE-2020-1115	Windows Common Log File System Driver	Elevation of Privilege	7.8	0.0109	More likely
Urgent	CVE-2020-1245	Microsoft Graphics Component	Elevation of Privilege	7.0	0.0083	More likely
Urgent	CVE-2020-1152	Microsoft Graphics Component	Elevation of Privilege	5.8	0.0060	More likely
High	CVE-2020-1074	Microsoft JET Database Engine	Remote Code Execution	7.8	0.4603	Exploitation Less Likely
High	CVE-2020-1013	Microsoft Windows	Elevation of Privilege	7.5	0.0646	Exploitation Less Likely
High	CVE-2020-1031	Windows DHCP Server	Information Disclosure	7.5	0.0514	Exploitation Less Likely
High	CVE-2020-0836	Microsoft Windows DNS	Denial of Service	7.5	0.0505	Exploitation Less Likely
High	CVE-2020-1228	Microsoft Windows DNS	Denial of Service	7.5	0.0450	Exploitation Less Likely
High	CVE-2020-1039	Microsoft JET Database Engine	Remote Code Execution	7.8	0.0427	Exploitation Less Likely
High	CVE-2020-1012	Internet Explorer	Elevation of Privilege	8.8	0.0374	Exploitation Less Likely
High	CVE-2020-0718	Windows Active Directory	Remote Code Execution	8.8	0.0361	Exploitation Less Likely
High	CVE-2020-0761	Windows Active Directory	Remote Code Execution	8.8	0.0361	Exploitation Less Likely
High	CVE-2020-17162	Microsoft Windows	Security Feature Bypass	8.8	0.0243	None reported
High	CVE-2020-0886	Microsoft Windows	Elevation of Privilege	7.8	0.0124	Exploitation Less Likely
High	CVE-2020-1030	Windows Print Spooler Components	Elevation of Privilege	7.8	0.0110	Exploitation Less Likely
High	CVE-2020-0911	Microsoft Windows	Elevation of Privilege	7.8	0.0104	Exploitation Less Likely

Released the same day

KB3101523
Microsoft Business Productivity Servers 2010 Service Pack 2
KB4484480
Microsoft SharePoint Enterprise Server 2013 Service Pack 1
KB4484488
Microsoft SharePoint Foundation 2013 Service Pack 1
KB4484504
Microsoft SharePoint Server 2019
KB4484505
Microsoft SharePoint Server 2019
KB4484506
Microsoft SharePoint Enterprise Server 2016
KB4484507
Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition)
KB4484513
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB4484515
Microsoft SharePoint Enterprise Server 2013 Service Pack 1
KB4484517
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)
KB4484525
Microsoft SharePoint Foundation 2013 Service Pack 1
KB4484526
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)

Vendor advisory

https://support.microsoft.com/help/4577066

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