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KB5120249BMonthly security release (Patch Tuesday) · 2026-08 B

Monthly security release (Patch Tuesday) for Windows 10, version 22H2 and Windows 10, version 21H2

Support article Update Catalog CVEs in Security CVE list for a ticket

Is it safe to deploy?

Everything in the August 2026 Patch Tuesday cycle
2Windows versions
158CVEs fixed · 6 critical
1Exploited or in CISA KEV
0Open known issues affecting it
YesRestart required (per MSRC)

Applies to

From Microsoft's release-information tables
Servicing branchOS buildReleaseAvailable
Windows 10, version 22H2 19045.7663 B 2026-08 B 11 Aug 2026
Windows 10, version 21H2 19044.7663 B 2026-08 B 11 Aug 2026

Known issues in this update

Windows release health

No known issues listed

Windows release health lists no issues from this KB or the update it builds on.

Issues this update resolves

No resolved issues listed

Windows release health names no issues fixed by this KB.

Security fixes

158 Microsoft CVEs · most urgent first
CVE Vulnerability Severity CVSSEPSSImpact Status
CVE-2026-68820 Windows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityWindows Ancillary Function Driver for WinSock Important 7.00.3%Elevation of Privilege ExploitedCISA KEV · due 25 Aug
CVE-2026-62832 Windows User Profile Service Elevation of Privilege VulnerabilityWindows User Profile Service Important 7.80.4%Elevation of Privilege Disclosed
CVE-2026-62816 Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution VulnerabilityReliable Multicast Transport Driver (RMCAST) Critical 8.80.5%Remote Code Execution
CVE-2026-62822 Windows GDI+ Remote Code Execution VulnerabilityWindows GDI+ Critical 8.80.8%Remote Code Execution
CVE-2026-62819 Windows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityWindows Routing and Remote Access Service (RRAS) Critical 8.10.7%Remote Code Execution Revised 17 Sep
CVE-2026-62889 Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution VulnerabilityWindows Secure Socket Tunneling Protocol (SSTP) Critical 8.10.7%Remote Code Execution Revised 31 Aug
CVE-2026-62890 Windows GDI+ Elevation of Privilege VulnerabilityWindows GDI+ Critical 7.80.3%Remote Code Execution Revised 26 Aug
CVE-2026-66799 Windows Key Guard Elevation of Privilege VulnerabilityWindows Key Guard Critical 7.80.3%Elevation of Privilege
CVE-2026-49179 Windows Active Directory Domain Services Remote Code Execution VulnerabilityWindows Active Directory Important 8.80.9%Remote Code Execution
CVE-2026-62784 Microsoft Local Security Authority Server (lsasrv) Remote Code Execution VulnerabilityMicrosoft Local Security Authority Server (lsasrv) Important 8.80.9%Remote Code Execution
CVE-2026-62785 Windows LDAP - Lightweight Directory Access Protocol Remote Code Execution VulnerabilityWindows LDAP - Lightweight Directory Access Protocol Important 8.80.8%Remote Code Execution
CVE-2026-62790 Windows SMBv3 Server Remote Code Execution VulnerabilityWindows SMB Server Important 8.80.9%Remote Code Execution
CVE-2026-62795 Windows LDAP - Lightweight Directory Access Protocol Remote Code Execution VulnerabilityWindows LDAP - Lightweight Directory Access Protocol Important 8.80.8%Remote Code Execution
CVE-2026-62800 Windows SMBv3 Server Remote Code Execution VulnerabilityWindows SMB Server Important 8.80.9%Remote Code Execution
CVE-2026-62781 RPC Runtime Library Remote Code Execution VulnerabilityRPC Runtime Important 8.10.7%Remote Code Execution
CVE-2026-62792 Windows TCP/IP Remote Code Execution VulnerabilityWindows TCP/IP Important 8.10.7%Remote Code Execution
CVE-2026-42976 Remote Access Management service/API (RPC server) Elevation of Privilege VulnerabilityWindows RPC API Important 7.80.3%Elevation of Privilege Revised 12 Aug
CVE-2026-54984 Windows Imaging Component Remote Code Execution VulnerabilityWindows Imaging Component Important 7.80.5%Remote Code Execution
CVE-2026-56174 Windows Narrator Braille Elevation of Privilege VulnerabilityWindows Narrator Braille Important 7.80.5%Elevation of Privilege
CVE-2026-59127 Windows Installer Elevation of Privilege VulnerabilityWindows Installer Important 7.80.3%Elevation of Privilege Revised 25 Aug
CVE-2026-61349 Windows Work Folder Service Elevation of Privilege VulnerabilityWindows Work Folder Service Important 7.80.3%Elevation of Privilege Revised 11 Sep
CVE-2026-61353 Windows Telephony Service Elevation of Privilege VulnerabilityWindows Telephony Service Important 7.80.3%Elevation of Privilege
CVE-2026-61355 Windows Sensor Data Service Elevation of Privilege VulnerabilityWindows Sensor Data Service Important 7.80.3%Elevation of Privilege
CVE-2026-61356 Windows Remote Desktop Services Elevation of Privilege VulnerabilityWindows Remote Desktop Services Important 7.80.3%Elevation of Privilege
CVE-2026-61358 Windows Accessibility Infrastructure (ATBroker.exe) Elevation of Privilege VulnerabilityWindows Accessibility Infrastructure (ATBroker.exe) Important 7.80.4%Elevation of Privilege
CVE-2026-61364 Windows Remote Desktop Services Elevation of Privilege VulnerabilityWindows Remote Desktop Services Important 7.80.3%Elevation of Privilege
CVE-2026-61365 Windows Remote Desktop Services Elevation of Privilege VulnerabilityWindows Remote Desktop Services Important 7.80.3%Elevation of Privilege
CVE-2026-61367 Windows Remote Desktop Services Elevation of Privilege VulnerabilityWindows Remote Desktop Services Important 7.80.3%Elevation of Privilege
CVE-2026-61923 Windows Display Enhancement Service Elevation of Privilege VulnerabilityWindows Display Enhancement Service Important 7.80.3%Elevation of Privilege Revised 15 Sep
CVE-2026-61925 Windows Installer Elevation of Privilege VulnerabilityWindows Installer Important 7.80.3%Elevation of Privilege
CVE-2026-61926 Windows USB Driver Elevation of Privilege VulnerabilityWindows USB Driver Important 7.80.3%Elevation of Privilege
CVE-2026-61930 Windows Kernel Elevation of Privilege VulnerabilityWindows Kernel Important 7.80.3%Elevation of Privilege
CVE-2026-61932 Windows DWM Core Library Elevation of Privilege VulnerabilityWindows DWM Core Library Important 7.80.3%Elevation of Privilege
CVE-2026-61937 Windows HTTP.sys Elevation of Privilege VulnerabilityWindows HTTP.sys Important 7.80.3%Elevation of Privilege
CVE-2026-62692 Windows Remote Desktop Services Elevation of Privilege VulnerabilityWindows Remote Desktop Services Important 7.80.3%Elevation of Privilege
CVE-2026-62696 Windows Program Compatibility Assistant Service Elevation of Privilege VulnerabilityWindows Program Compatibility Assistant Service Important 7.80.3%Elevation of Privilege Revised 12 Aug
CVE-2026-62698 Microsoft Digest Authentication Elevation of Privilege VulnerabilityMicrosoft Digest Authentication Important 7.80.3%Elevation of Privilege
CVE-2026-62700 Windows NTFS Elevation of Privilege VulnerabilityWindows NTFS Important 7.80.3%Elevation of Privilege
CVE-2026-62701 Windows Telephony Service Elevation of Privilege VulnerabilityWindows Telephony Service Important 7.80.3%Elevation of Privilege
CVE-2026-62707 Windows Modern Device Management (MDM) Elevation of Privilege VulnerabilityWindows Modern Device Management (MDM) Important 7.80.3%Elevation of Privilege
CVE-2026-62710 Windows Device Association Service Elevation of Privilege VulnerabilityWindows Device Association Service Important 7.80.3%Elevation of Privilege
CVE-2026-62711 Windows Win32k Elevation of Privilege VulnerabilityWindows Win32K Important 7.80.3%Elevation of Privilege
CVE-2026-62712 Windows Win32k Elevation of Privilege VulnerabilityWindows Win32K Important 7.80.3%Elevation of Privilege
CVE-2026-62713 Windows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityWindows Cloud Files Mini Filter Driver Important 7.80.3%Elevation of Privilege
CVE-2026-62717 Windows Message Queuing Elevation of Privilege VulnerabilityWindows Message Queuing Important 7.80.3%Elevation of Privilege Revised 15 Sep
CVE-2026-62719 Windows Message Queuing Elevation of Privilege VulnerabilityWindows Message Queuing Important 7.80.3%Elevation of Privilege
CVE-2026-62721 Windows User-Mode Power Service (UMPS) Elevation of Privilege VulnerabilityUser-Mode Power Service (UMPS) Important 7.80.3%Elevation of Privilege Revised 14 Sep
CVE-2026-62732 Windows Telephony Service Elevation of Privilege VulnerabilityWindows Telephony Service Important 7.80.3%Elevation of Privilege
CVE-2026-62733 Windows Win32k Elevation of Privilege VulnerabilityWindows Win32K Important 7.80.3%Elevation of Privilege
CVE-2026-62735 Windows HTTP.sys Elevation of Privilege VulnerabilityWindows HTTP.sys Important 7.80.3%Elevation of Privilege
Showing 50 of 158All CVEs
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