Microsoft · Security update · October 13, 2020

KB4578963: October 2020 security update

KB4578963, released October 13, 2020, fixes 2 CVEs across 6 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 KEV1 publicly disclosedUnsupported product
CVEs closed
2
1 rated Critical
Exploited
1
CVE-2020-1147
Exploitation more likely
0
Microsoft's assessment
Highest EPSS
0.9580
99th percentile

Priority of the 2 CVEs

Patch now 1 Urgent 0 High 0 Routine 1

Applies to

Product
Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2
Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Patch now CVE-2020-1147 .NET FrameworkRemote Code Execution8.8 0.9580 KEVExploited
Routine CVE-2020-16937 .NET FrameworkInformation Disclosure4.7 0.0329 DisclosedExploitation Less Likely
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