Microsoft · Security update · August 11, 2026

KB5120418: August 2026 cumulative update for Windows 10 1607

KB5120418, released August 11, 2026, fixes 162 CVEs across 8 products. One of them is being exploited (CVE-2026-68820); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEV

CVEs closed

162

16 rated Critical

Exploited

CVE-2026-68820

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.0857

95th percentile

Priority of the 162 CVEs

Patch now 1
                                Urgent 27
                                High 82
                                Routine 52

Applies to

Product	Build after install
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems	14393.9418
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems	14393.9418
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016	14393.9418
Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation)	14393.9418
Windows 10 Version 1607 for 32-bit Systems	14393.9418
Windows 10 Version 1607 for x64-based Systems	14393.9418
Windows Server 2016	14393.9418
Windows Server 2016 (Server Core installation)	14393.9418

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Patch now	CVE-2026-68820	Windows Ancillary Function Driver for WinSock	Elevation of Privilege	7.0	0.0857	KEVExploited
Urgent	CVE-2026-59132	Windows TCP/IP	Denial of Service	7.5	0.0117	More likely
Urgent	CVE-2026-62878	Windows DNS	Remote Code Execution	9.8	0.0097	Exploitation Less Likely
Urgent	CVE-2026-62893	Windows Deployment Services	Remote Code Execution	9.8	0.0097	More likely
Urgent	CVE-2026-65791	Windows iSCSI Target Service	Remote Code Execution	9.8	0.0097	Exploitation Unlikely
Urgent	CVE-2026-62818	Active Directory Certificate Services (AD CS)	Remote Code Execution	8.8	0.0091	Exploitation Less Likely
Urgent	CVE-2026-62735	Windows HTTP.sys	Elevation of Privilege	7.8	0.0087	More likely
Urgent	CVE-2026-62822	Windows GDI+	Remote Code Execution	8.8	0.0082	Exploitation Less Likely
Urgent	CVE-2026-62824	Remote Desktop Client	Remote Code Execution	8.8	0.0082	Exploitation Less Likely
Urgent	CVE-2026-62819	Windows Routing and Remote Access Service (RRAS)	Remote Code Execution	8.1	0.0071	Exploitation Less Likely
Urgent	CVE-2026-62889	Windows Secure Socket Tunneling Protocol (SSTP)	Remote Code Execution	8.1	0.0071	Exploitation Less Likely
Urgent	CVE-2026-65679	Windows iSCSI Target Service	Remote Code Execution	8.1	0.0071	Exploitation Less Likely
Urgent	CVE-2026-65789	Windows DNS	Remote Code Execution	8.1	0.0071	Exploitation Unlikely
Urgent	CVE-2026-65796	Windows iSCSI Target Service	Remote Code Execution	8.1	0.0071	Exploitation Unlikely
Urgent	CVE-2026-62820	Windows DNS	Remote Code Execution	8.1	0.0054	Exploitation Less Likely
Urgent	CVE-2026-62816	Reliable Multicast Transport Driver (RMCAST)	Remote Code Execution	8.8	0.0054	Exploitation Less Likely
Urgent	CVE-2026-62823	Windows DHCP Server	Remote Code Execution	8.8	0.0054	More likely
Urgent	CVE-2026-61930	Windows Kernel	Elevation of Privilege	7.8	0.0033	More likely
Urgent	CVE-2026-62696	Windows Program Compatibility Assistant Service	Elevation of Privilege	7.8	0.0033	More likely
Urgent	CVE-2026-62698	Microsoft Digest Authentication	Elevation of Privilege	7.8	0.0033	More likely
Urgent	CVE-2026-62712	Windows Win32K	Elevation of Privilege	7.8	0.0033	More likely
Urgent	CVE-2026-62741	Windows HTTP.sys	Elevation of Privilege	7.8	0.0033	More likely
Urgent	CVE-2026-62890	Windows GDI+	Remote Code Execution	7.8	0.0033	Exploitation Less Likely
Urgent	CVE-2026-66799	Windows Key Guard	Elevation of Privilege	7.8	0.0033	Exploitation Less Likely
Urgent	CVE-2026-61925	Windows Installer	Elevation of Privilege	7.8	0.0030	More likely

Released the same day

KB5002755
Microsoft Outlook 2016 (32-bit edition), Microsoft Outlook 2016 (64-bit edition)
KB5002791
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002795
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002813
Microsoft Access 2016 (32-bit edition), Microsoft Access 2016 (64-bit edition)
KB5002832
Microsoft Access 2016 (32-bit edition), Microsoft Access 2016 (64-bit edition)
KB5002893
Microsoft SharePoint Server Subscription Edition
KB5002894
Microsoft SharePoint Server 2019
KB5002896
Microsoft SharePoint Server 2019
KB5002897
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002899
Microsoft PowerPoint 2016 (32-bit edition), Microsoft PowerPoint 2016 (64-bit edition)
KB5002900
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002901
Microsoft Word 2016 (32-bit edition), Microsoft Word 2016 (64-bit edition)

Vendor advisory

https://support.microsoft.com/help/5120418

Our write-up

August 2026 Patch Tuesday: The Only One Under Attack Was Rated Important

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