Microsoft · Security update · January 12, 2021

KB4598278: January 2021 security update

KB4598278, released January 12, 2021, fixes 38 CVEs across 2 products. One of them is being exploited (CVE-2020-17087); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEV2 publicly disclosed
CVEs closed
38
7 rated Critical
Exploited
1
CVE-2020-17087
Exploitation more likely
1
Vendor assessment
Highest EPSS
0.0543
92nd percentile

Priority of the 38 CVEs

Patch now 1 Urgent 8 High 23 Routine 6

Applies to

Product
Windows Server 2012
Windows Server 2012 (Server Core installation)

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Patch now CVE-2020-17087 Windows Kernel Elevation of Privilege 7.8 0.0543 KEVDisclosedExploited
Urgent CVE-2021-1665 Microsoft Graphics Component Remote Code Execution 7.8 0.0406 Exploitation Less Likely
Urgent CVE-2021-1668 Microsoft DTV-DVD Video Decoder Remote Code Execution 7.8 0.0392 Exploitation Less Likely
Urgent CVE-2021-1667 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0387 Exploitation Less Likely
Urgent CVE-2021-1658 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0320 Exploitation Less Likely
Urgent CVE-2021-1660 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0320 Exploitation Less Likely
Urgent CVE-2021-1666 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0320 Exploitation Less Likely
Urgent CVE-2021-1673 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0320 Exploitation Less Likely
Urgent CVE-2021-1709 Microsoft Graphics Component Elevation of Privilege 7.0 0.0079 More likely
High CVE-2021-1700 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0387 Exploitation Less Likely
High CVE-2021-1701 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0387 Exploitation Less Likely
High CVE-2021-1694 Windows Update Stack Elevation of Privilege 7.5 0.0351 Exploitation Less Likely
High CVE-2021-1710 Windows Media Remote Code Execution 7.8 0.0322 Exploitation Less Likely
High CVE-2021-1664 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0320 Exploitation Less Likely
High CVE-2021-1671 Windows Remote Procedure Call Runtime Remote Code Execution 8.8 0.0320 Exploitation Less Likely
High CVE-2021-1674 Windows Remote Desktop Security Feature Bypass 8.8 0.0320 Exploitation Less Likely
High CVE-2021-1706 Microsoft Windows Elevation of Privilege 7.3 0.0225 Exploitation Less Likely
High CVE-2021-1648 Windows splwow64 Elevation of Privilege 7.8 0.0125 DisclosedExploitation Less Likely
High CVE-2021-1704 Windows Hyper-V Elevation of Privilege 7.3 0.0103 Exploitation Less Likely
High CVE-2021-1657 Microsoft Windows Remote Code Execution 7.8 0.0095 Exploitation Less Likely
High CVE-2021-1695 Windows Print Spooler Components Elevation of Privilege 7.8 0.0087 Exploitation Less Likely
High CVE-2021-1661 Windows Installer Elevation of Privilege 7.8 0.0083 Exploitation Less Likely
High CVE-2021-1650 Microsoft Windows Elevation of Privilege 7.8 0.0081 Exploitation Less Likely
High CVE-2021-1649 Microsoft Windows Elevation of Privilege 7.8 0.0079 Exploitation Less Likely
High CVE-2021-1652 Windows CSC Service Elevation of Privilege 7.8 0.0079 Exploitation Less Likely
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