Microsoft · Security update · May 10, 2016

KB3156421: May 2016 cumulative update for Windows 10 1511

KB3156421, released May 10, 2016, fixes 25 CVEs across 10 products. One of them is being exploited (CVE-2016-0189); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

Patch now1 on CISA KEVKnown ransomware use1 publicly disclosedUnsupported product

CVEs closed

9 rated Critical

Exploited

CVE-2016-0189

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.9406

99th percentile

Priority of the 25 CVEs

Patch now 1
                                Urgent 15
                                High 7
                                Routine 2

Applies to

Product	Build after install
Internet Explorer 11 on Windows 10 Version 1511 for 32-bit Systems	10586.318
Internet Explorer 11 on Windows 10 Version 1511 for x64-based Systems	10586.318
Microsoft .NET Framework 3.5 on Windows 10 Version 1511 for 32-bit Systems	10586.318
Microsoft .NET Framework 3.5 on Windows 10 Version 1511 for x64-based Systems	10586.318
Microsoft .NET Framework 4.6.1 on Windows 10 Version 1511 for 32-bit Systems	10586.318
Microsoft .NET Framework 4.6.1 on Windows 10 Version 1511 for x64-based Systems	10586.318
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for 32-bit Systems	10586.318
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for x64-based Systems	10586.318
Windows 10 Version 1511 for 32-bit Systems	10586.318
Windows 10 Version 1511 for x64-based Systems	10586.318

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Patch now	CVE-2016-0189	Internet Explorer	Remote Code Execution	n/a	0.9406	KEVRansomwareExploited
Urgent	CVE-2016-0170	Microsoft Graphics Component	Remote Code Execution	n/a	0.4859	Exploitation Less Likely
Urgent	CVE-2016-0169	Microsoft Graphics Component	Information Disclosure	n/a	0.4325	More likely
Urgent	CVE-2016-0191	Microsoft Edge	Remote Code Execution	n/a	0.2826	More likely
Urgent	CVE-2016-0179	Windows Shell	Remote Code Execution	n/a	0.2419	Exploitation Less Likely
Urgent	CVE-2016-0187	Internet Explorer	Remote Code Execution	n/a	0.2159	More likely
Urgent	CVE-2016-0193	Microsoft Edge	Remote Code Execution	n/a	0.2008	More likely
Urgent	CVE-2016-0182	Windows Journal	Remote Code Execution	n/a	0.1971	Exploitation Unlikely
Urgent	CVE-2016-0186	Microsoft Edge	Remote Code Execution	n/a	0.1945	None reported
Urgent	CVE-2016-0184	Microsoft Graphics Component	Remote Code Execution	n/a	0.1877	More likely
Urgent	CVE-2016-0195	Microsoft Graphics Component	Remote Code Execution	n/a	0.1842	Exploitation Less Likely
Urgent	CVE-2016-0171	Windows Kernel-Mode Drivers	Elevation of Privilege	n/a	0.0380	More likely
Urgent	CVE-2016-0173	Windows Kernel-Mode Drivers	Elevation of Privilege	n/a	0.0366	More likely
Urgent	CVE-2016-0174	Windows Kernel-Mode Drivers	Elevation of Privilege	n/a	0.0249	More likely
Urgent	CVE-2016-0176	Windows Kernel-Mode Drivers	Elevation of Privilege	n/a	0.0203	More likely
Urgent	CVE-2016-0196	Windows Kernel-Mode Drivers	Elevation of Privilege	n/a	0.0203	More likely
High	CVE-2016-0168	Microsoft Graphics Component	Information Disclosure	n/a	0.4325	Exploitation Less Likely
High	CVE-2016-0178	Microsoft RPC	Remote Code Execution	n/a	0.1671	Exploitation Less Likely
High	CVE-2016-0149	.NET Framework	Information Disclosure	n/a	0.0839	DisclosedExploitation Unlikely
High	CVE-2016-0175	Windows Kernel-Mode Drivers	Information Disclosure	n/a	0.0382	Exploitation Less Likely
High	CVE-2016-0181	Virtual Secure Mode	Security Feature Bypass	n/a	0.0152	Exploitation Unlikely
High	CVE-2016-0197	Windows Kernel-Mode Drivers	Elevation of Privilege	n/a	0.0150	Exploitation Unlikely
High	CVE-2016-0180	Windows Kernel	Elevation of Privilege	n/a	0.0149	Exploitation Less Likely
Routine	CVE-2016-0192	Microsoft Browsers	Remote Code Execution	n/a	0.1689	Exploitation Less Likely
Routine	CVE-2016-0194	Internet Explorer	Information Disclosure	n/a	0.1551	Exploitation Less Likely

Released the same day

KB2984938
Microsoft Office 2007 Service Pack 3
KB2984943
Microsoft Office 2007 Service Pack 3
KB3054984
Microsoft Office 2010 Service Pack 2 (32-bit editions), Microsoft Office 2010 Service Pack 2 (64-bit editions)
KB3101520
Microsoft Office 2010 Service Pack 2 (32-bit editions), Microsoft Office 2010 Service Pack 2 (64-bit editions)
KB3115016
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)
KB3115025
Microsoft Word 2013 RT Service Pack 1, Microsoft Word 2013 Service Pack 1 (32-bit editions), Microsoft Word 2013 Service Pack 1 (64-bit editions)
KB3115094
Microsoft Word 2016 (32-bit edition), Microsoft Word 2016 (64-bit edition)
KB3115103
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB3115115
Microsoft Office Compatibility Pack Service Pack 3
KB3115116
Microsoft Word 2007 Service Pack 3
KB3115117
Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2
KB3115121
Microsoft Office 2010 Service Pack 2 (32-bit editions), Microsoft Office 2010 Service Pack 2 (64-bit editions)

Vendor advisory

https://support.microsoft.com/help/3156421

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