Microsoft · Security update · January 14, 2020

KB4534976: January 2020 security update

KB4534976, released January 14, 2020, fixes 3 CVEs across 17 products. One of them is being exploited (CVE-2020-0646); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

Patch now1 on CISA KEVUnsupported product
CVEs closed
3
3 rated Critical
Exploited
1
CVE-2020-0646
Exploitation more likely
0
Microsoft's assessment
Highest EPSS
0.9922
99th percentile

Priority of the 3 CVEs

Patch now 1 Urgent 2 High 0 Routine 0

Applies to

Product
Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1
Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1
Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1
Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
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)
Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1
Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1
Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Patch now CVE-2020-0646 .NET FrameworkRemote Code Executionn/a 0.9922 KEVExploited
Urgent CVE-2020-0605 .NET FrameworkRemote Code Executionn/a 0.1840 Exploitation Less Likely
Urgent CVE-2020-0606 .NET FrameworkRemote Code Executionn/a 0.1834 Exploitation Less Likely
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