Microsoft · Security update · December 12, 2023

KB5032874: December 2023 security update

KB5032874, released December 12, 2023, fixes 6 CVEs in .NET 6.0. One of them is being exploited (CVE-2023-44487); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

Patch now1 on CISA KEVUnsupported product

CVEs closed

3 rated Critical

Exploited

CVE-2023-44487

Exploitation more likely

Microsoft's assessment

Highest EPSS

1.0000

99th percentile

Priority of the 6 CVEs

Patch now 1
                                Urgent 3
                                High 1
                                Routine 1

Applies to

Product
.NET 6.0

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Patch now	CVE-2023-44487	HTTP/2	Denial of Service	7.5	1.0000	KEVExploited
Urgent	CVE-2023-36792	.NET and Visual Studio	Remote Code Execution	7.8	0.0123	Exploitation Less Likely
Urgent	CVE-2023-36793	.NET and Visual Studio	Remote Code Execution	7.8	0.0123	Exploitation Less Likely
Urgent	CVE-2023-36796	.NET and Visual Studio	Remote Code Execution	7.8	0.0123	Exploitation Less Likely
High	CVE-2023-36794	.NET and Visual Studio	Remote Code Execution	7.8	0.0123	N/A
Routine	CVE-2023-36799	.NET Core & Visual Studio	Denial of Service	6.5	0.0464	Exploitation Less Likely

Released the same day

KB5002520
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002529
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5029365
Microsoft Visual Studio 2013 Update 5
KB5029366
Microsoft Visual Studio 2015 Update 3
KB5029924
Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems, Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems, Microsoft .NET Framework 4.8 on Windows Server 2016 and 1 more
KB5030178
Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems and 6 more
KB5030179
Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems and 3 more
KB5030180
Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems and 3 more
KB5030181
Microsoft .NET Framework 3.5 AND 4.8 on Windows 11 version 21H2 for ARM64-based Systems, Microsoft .NET Framework 3.5 AND 4.8 on Windows 11 version 21H2 for x64-based Systems, Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 21H2 for ARM64-based Systems and 1 more
KB5030182
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 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 and 3 more
KB5030183
Microsoft .NET Framework 3.5 on Windows Server 2012, Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation), Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 and 3 more
KB5030184
Microsoft .NET Framework 3.5 on Windows Server 2012 R2, Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation), Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 and 3 more

Vendor advisory

https://support.microsoft.com/help/5032874

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