Microsoft · Security update · August 13, 2024

KB5042321: August 2024 security update

KB5042321, released August 13, 2024, fixes 1 CVE in Windows 11 version 21H2 for x64-based Systems. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

UrgentUnsupported product

CVEs closed

None rated Critical

Exploited

None reported

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.0065

51st percentile

Applies to

Product
Windows 11 version 21H2 for x64-based Systems

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Urgent	CVE-2024-38163	Windows Update Stack	Elevation of Privilege	7.8	0.0065	More likely

Released the same day

KB5002561
Microsoft Project 2016 (32-bit edition), Microsoft Project 2016 (64-bit edition)
KB5002570
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002625
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002626
Microsoft Outlook 2016 (32-bit edition), Microsoft Outlook 2016 (64-bit edition)
KB5041160
Windows Server 2022, Windows Server 2022 (Server Core installation)
KB5041571
Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems
KB5041573
Windows Server 2022, 23H2 Edition (Server Core installation)
KB5041578
Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 and 1 more
KB5041580
Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems and 3 more
KB5041585
Windows 11 Version 22H2 for ARM64-based Systems, Windows 11 Version 22H2 for x64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems and 1 more
KB5041592
Windows 11 version 21H2 for ARM64-based Systems, Windows 11 version 21H2 for x64-based Systems
KB5041770
Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)

Vendor advisory

https://support.microsoft.com/help/5042321

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