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The Update Bureau
Security

KB5063878: all 49 vulnerabilities

Cumulative update for Windows 11, version 24H2, August 2025. The update page explains it and lists only the exploited, publicly disclosed and critical vulnerabilities; here are all of them, most severe first.

Vulnerabilities fixed

49 vulnerabilities fixed
5 critical 44 important
VulnerabilitySeverityCVSS
Windows Graphics Component Remote Code Execution Vulnerability
Critical 9.8
GDI+ Remote Code Execution Vulnerability
Critical 9.8
Windows NTLM Elevation of Privilege Vulnerability
Critical 8.8
Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability
Critical 8.1
DirectX Graphics Kernel Remote Code Execution Vulnerability
Critical 7.8
Remote Desktop Spoofing Vulnerability
Important 9.1
Windows Media Remote Code Execution Vulnerability
Important 8.8
Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability
Important 8.8
Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability
Important 8.8
Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability
Important 8.8
Windows Kernel Elevation of Privilege Vulnerability
Important 7.8
Windows Push Notifications Apps Elevation of Privilege Vulnerability
Important 7.8
Win32k Elevation of Privilege Vulnerability
Important 7.8
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Important 7.8
Windows Installer Elevation of Privilege Vulnerability
Important 7.8
Win32k Elevation of Privilege Vulnerability
Important 7.8
Windows PrintWorkflowUserSvc Elevation of Privilege Vulnerability
Important 7.8
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Important 7.8
Kernel Streaming WOW Thunk Service Driver Elevation of Privilege Vulnerability
Important 7.8
Windows Kernel Elevation of Privilege Vulnerability
Important 7.8
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Important 7.8
Windows Hyper-V Elevation of Privilege Vulnerability
Important 7.8
Windows Hyper-V Elevation of Privilege Vulnerability
Important 7.8
Windows Push Notifications Apps Elevation of Privilege Vulnerability
Important 7.8
Windows Push Notifications Apps Elevation of Privilege Vulnerability
Important 7.8
Windows Push Notifications Apps Elevation of Privilege Vulnerability
Important 7.8
Windows SMB Remote Code Execution Vulnerability
Important 7.5
Windows Remote Desktop Services Denial of Service Vulnerability
Important 7.5
Remote Access Point-to-Point Protocol (PPP) EAP-TLS Elevation of Privilege Vulnerability
Important 7.3
Win32k Elevation of Privilege Vulnerability
Important 7.3
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Important 7.0
Windows NTFS Information Disclosure Vulnerability
Important 7.0
Windows Hyper-V Elevation of Privilege Vulnerability
Important 7.0
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Important 7.0
DirectX Graphics Kernel Elevation of Privilege Vulnerability
Important 7.0
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Important 7.0
Windows Kernel Transaction Manager Elevation of Privilege Vulnerability
Important 7.0
Microsoft Brokering File System Elevation of Privilege Vulnerability
Important 7.0
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Important 7.0
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Important 7.0
Windows Connected Devices Platform Service Elevation of Privilege Vulnerability
Important 7.0
Windows Hyper-V Denial of Service Vulnerability
Important 6.8
Windows Graphics Component Elevation of Privilege Vulnerability
Important 6.7
Microsoft Windows File Explorer Spoofing Vulnerability
Important 6.5
Windows Distributed Transaction Coordinator (MSDTC) Information Disclosure Vulnerability
Important 6.5
DirectX Graphics Kernel Denial of Service Vulnerability
Important 6.5
Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability
Important 6.5
NT OS Kernel Information Disclosure Vulnerability
Important 5.5
Windows Storage Port Driver Information Disclosure Vulnerability
Important 5.5