Microsoft · Security update · October 13, 2020

KB4580327: October 2020 cumulative update for Windows 10 1507

KB4580327, released October 13, 2020, fixes 35 CVEs across 4 products. One of them is being exploited (CVE-2020-1147); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

Patch now1 on CISA KEV2 publicly disclosedUnsupported product
CVEs closed
35
6 rated Critical
Exploited
1
CVE-2020-1147
Exploitation more likely
2
Vendor assessment
Highest EPSS
0.9580
99th percentile

Priority of the 35 CVEs

Patch now 1 Urgent 7 High 20 Routine 7

Applies to

ProductBuild after install
Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems10240.18725
Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems10240.18725
Windows 10 for 32-bit Systems10240.18725
Windows 10 for x64-based Systems10240.18725

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Patch now CVE-2020-1147 .NET Framework Remote Code Execution 8.8 0.9580 KEVExploited
Urgent CVE-2020-16896 Windows RDP Information Disclosure 7.5 0.1260 More likely
Urgent CVE-2020-16968 Microsoft Windows Codecs Library Remote Code Execution 7.8 0.0487 Exploitation Less Likely
Urgent CVE-2020-16911 Microsoft Graphics Component Remote Code Execution 8.8 0.0445 Exploitation Less Likely
Urgent CVE-2020-16967 Microsoft Windows Codecs Library Remote Code Execution 7.8 0.0421 Exploitation Less Likely
Urgent CVE-2020-16923 Microsoft Graphics Component Remote Code Execution 7.8 0.0383 Exploitation Less Likely
Urgent CVE-2020-16891 Windows Hyper-V Remote Code Execution 8.8 0.0095 Exploitation Less Likely
Urgent CVE-2020-16922 Microsoft Windows Spoofing 5.3 0.0081 More likely
High CVE-2020-16927 Windows RDP Denial of Service 7.5 0.0592 Exploitation Less Likely
High CVE-2020-16924 Microsoft Windows Remote Code Execution 7.8 0.0412 Exploitation Less Likely
High CVE-2020-16939 Group Policy Elevation of Privilege 7.8 0.0242 Exploitation Less Likely
High CVE-2020-16940 Microsoft Windows Elevation of Privilege 7.8 0.0155 Exploitation Less Likely
High CVE-2020-16920 Microsoft Windows Elevation of Privilege 7.8 0.0142 Exploitation Less Likely
High CVE-2020-16935 Microsoft Windows Elevation of Privilege 7.8 0.0100 Exploitation Less Likely
High CVE-2020-16916 Windows COM Elevation of Privilege 7.8 0.0098 Exploitation Less Likely
High CVE-2020-16902 Windows Installer Elevation of Privilege 7.8 0.0094 Exploitation Less Likely
High CVE-2020-16976 Microsoft Windows Elevation of Privilege 7.8 0.0093 Exploitation Less Likely
High CVE-2020-16876 Microsoft Windows Elevation of Privilege 7.1 0.0092 Exploitation Less Likely
High CVE-2020-16887 Microsoft Windows Elevation of Privilege 7.8 0.0092 Exploitation Less Likely
High CVE-2020-16892 Windows Kernel Elevation of Privilege 7.8 0.0091 Exploitation Less Likely
High CVE-2020-16912 Microsoft Windows Elevation of Privilege 7.8 0.0091 Exploitation Less Likely
High CVE-2020-16972 Microsoft Windows Elevation of Privilege 7.8 0.0091 Exploitation Less Likely
High CVE-2020-16974 Microsoft Windows Elevation of Privilege 7.8 0.0091 Exploitation Less Likely
High CVE-2020-16975 Microsoft Windows Elevation of Privilege 7.8 0.0091 Exploitation Less Likely
High CVE-2020-16936 Microsoft Windows Elevation of Privilege 7.8 0.0090 Exploitation Less Likely
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