Microsoft Patches 398 Windows Flaws Including Actively Exploited WinSock Zero-Day

Microsoft has released security updates for August 2026, addressing 398 CVEs across Windows, Office, SharePoint Server, Azure services, .NET, PowerShell, Visual Studio Code, and other enterprise products This article explores windows cve 2026. .

CVE ID Vulnerability title Type Severity Product / Component CVE-2026-72971 Windows Container Isolation FS Filter Driver (unionfs.sys) Tampering Vulnerability Tampering Important Windows Container Isolation FS Filter Driver CVE-2026-71331 Windows Device Health Attestation Remote Code Execution Vulnerability RCE Critical Azure Attestation / DHA Service CVE-2026-70355 Microsoft SharePoint Server Elevation of Privilege Vulnerability EoP Important Microsoft Office SharePoint CVE-2026-70354 .NET Core Remote Code Execution Vulnerability RCE Important .NET CVE-2026-70348 Windows Management Services Denial of Service Vulnerability DoS Important Windows Management Services CVE-2026-70347 Windows Installer Elevation of Privilege Vulnerability EoP Important Windows Installer CVE-2026-70346 Windows Installer Elevation of Privilege Vulnerability EoP Important Windows Installer CVE-2026-70345 Windows Installer Elevation of Privilege Vulnerability EoP Important Windows Installer CVE-2026-70344 Windows Installer Elevation of Privilege Vulnerability EoP Important Windows Installer CVE-2026-70340 Azure CycleCloud Elevation of Privilege Vulnerability EoP Important Azure CycleCloud CVE-2026-61349 Windows Work Folder Service Elevation of Privilege Vulnerability EoP Important Windows Work Folder Service CVE-2026-61348 Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability EoP Important Windows AFD / WinSock CVE-2026-61347 Windows Event Logging Service Information Disclosure Vulnerability Information Disclosure Important Windows Event Logging Service CVE-2026-61346 Windows Graphics Kernel Elevation of Privilege Vulnerability EoP Important Windows Graphics Kernel CVE-2026-61345 Microsoft Remote Registry Service Denial of Service Vulnerability DoS Important Remote Registry Service CVE-2026-59138 Microsoft Remote Registry Service Denial of Service Vulnerability DoS Important Remote Registry Service CVE-2026-59137 Windows Event Logging Service Information Disclosure Vulnerability Information Disclosure Important Windows Event Logging Service CVE-2026-59136 Microsoft COM for Windows Information Disclosure Vulnerability Information Disclosure Important Microsoft COM for Windows CVE-2026-59135 Microsoft Windows Search Component Information Disclosure Vulnerability Information Disclosure Important Windows Search CVE-2026-59134 Remote Desktop Client Remote Code Execution Vulnerability RCE Important Remote Desktop Client CVE-2026-59133 Microsoft High Performance Computing Pack Elevation of Privilege Vulnerability EoP Important Microsoft HPC Pack...