Microsoft · Security update · December 8, 2020

KB4593226: December 2020 cumulative update for Windows 10 1607

KB4593226, released December 8, 2020, fixes 15 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent
CVEs closed
15
1 rated Critical
Exploited
0
None reported
Exploitation more likely
1
Vendor assessment
Highest EPSS
0.1954
97th percentile

Priority of the 15 CVEs

Patch now 0 Urgent 2 High 9 Routine 4

Applies to

ProductBuild after install
Windows 10 Version 1607 for 32-bit Systems14393.4104
Windows 10 Version 1607 for x64-based Systems14393.4104
Windows Server 201614393.4104
Windows Server 2016 (Server Core installation)14393.4104

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
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
High CVE-2020-17140 Windows SMB Information Disclosure 8.1 0.1535 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-2020-16958 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
Routine CVE-2020-17098 Microsoft Graphics Component Information Disclosure 5.5 0.0140 Exploitation Less Likely
Routine CVE-2020-17138 Microsoft Windows Information Disclosure 5.5 0.0106 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
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