Microsoft · Security update · December 12, 2023

KB5033376: December 2023 security update

KB5033376, released December 12, 2023, fixes 1 CVE across 6 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.9282

99th percentile

Applies to

Product
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Urgent	CVE-2023-35628	Windows MSHTML Platform	Remote Code Execution	8.1	0.9282	More 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/5033376

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