Microsoft April 2026 Patch Tuesday fixes 167 flaws, 2 zero-days

Tag CVE ID CVE Title Severity .NET CVE-2026-26171 .NET Denial of Service Vulnerability Vital .NET CVE-2026-32178 .NET Spoofing Vulnerability Vital .NET and Visible Studio CVE-2026-32203 .NET and Visible Studio Denial of Service Vulnerability Vital .NET Framework CVE-2026-23666 .NET Framework Denial of Service Vulnerability Vital .NET Framework CVE-2026-32226 .NET Framework Denial of Service Vulnerability Vital .NET, .NET Framework, Visible Studio CVE-2026-33116 .NET, .NET Framework, and Visible Studio Denial of Service Vulnerability Vital Applocker Filter Driver (applockerfltr.sys) CVE-2026-25184 Applocker Filter Driver (applockerfltr.sys) Elevation of Privilege Vulnerability Vital Azure Logic Apps CVE-2026-32171 Azure Logic Apps Elevation of Privilege Vulnerability Vital Azure Monitor Agent CVE-2026-32192 Azure Monitor Agent Elevation of Privilege Vulnerability Vital Azure Monitor Agent CVE-2026-32168 Azure Monitor Agent Elevation of Privilege Vulnerability Vital Desktop Window Supervisor CVE-2026-27924 Desktop Window Supervisor Elevation of Privilege Vulnerability Vital Desktop Window Supervisor CVE-2026-32154 Desktop Window Supervisor Elevation of Privilege Vulnerability Vital Desktop Window Supervisor CVE-2026-32152 Desktop Window Supervisor Elevation of Privilege Vulnerability Vital Desktop Window Supervisor CVE-2026-27923 Desktop Window Supervisor Elevation of Privilege Vulnerability Vital Desktop Window Supervisor CVE-2026-32155 Desktop Window Supervisor Elevation of Privilege Vulnerability Vital Perform Discovery Service (fdwsd.dll) CVE-2026-32087 Home windows Perform Discovery Service (fdwsd.dll) Elevation of Privilege Vulnerability Vital Perform Discovery Service (fdwsd.dll) CVE-2026-32086 Home windows Perform Discovery Service (fdwsd.dll) Elevation of Privilege Vulnerability Vital Perform Discovery Service (fdwsd.dll) CVE-2026-32150 Home windows Perform Discovery Service (fdwsd.dll) Elevation of Privilege Vulnerability Vital Perform Discovery Service (fdwsd.dll) CVE-2026-32093 Home windows Perform Discovery Service (fdwsd.dll) Elevation of Privilege Vulnerability Vital GitHub Copilot and Visible Studio Code CVE-2026-23653 GitHub Copilot and Visible Studio Code Info Disclosure Vulnerability Vital GitHub Repo: Git for Home windows CVE-2026-32631 GitHub: CVE-2026-32631 ‘git clone’ from manipulated repositories can leak NTLM hashes Vital Enter-Output Reminiscence Administration Unit (IOMMU) CVE-2023-20585 AMD: CVE-2023-20585 IOMMU Write Buffer Vulnerability Vital Microsoft Brokering File System CVE-2026-32091 Microsoft Brokering File System Elevation of Privilege Vulnerability Vital Microsoft Brokering File System CVE-2026-32219 Microsoft Brokering File System Elevation of Privilege Vulnerability Vital Microsoft Brokering File System CVE-2026-26181 Microsoft Brokering File System Elevation of Privilege Vulnerability Vital Microsoft Defender CVE-2026-33825 Microsoft Defender Elevation of Privilege Vulnerability Vital Microsoft Dynamics 365 (on-premises) CVE-2026-33103 Microsoft Dynamics 365 (On-Premises) Info Disclosure Vulnerability Vital Microsoft Graphics Element CVE-2026-32221 Home windows Graphics Element Distant Code Execution Vulnerability Vital Microsoft Excessive Efficiency Compute Pack (HPC) CVE-2026-32184 Microsoft Excessive Efficiency Compute (HPC) Pack Elevation of Privilege Vulnerability Vital Microsoft Administration Console CVE-2026-27914 Microsoft Administration Console Elevation of Privilege Vulnerability Vital Microsoft Workplace CVE-2026-32190 Microsoft Workplace Distant Code Execution Vulnerability Vital Microsoft Workplace Excel CVE-2026-32199 Microsoft Excel Distant Code Execution Vulnerability Vital Microsoft Workplace Excel CVE-2026-32198 Microsoft Excel Distant Code Execution Vulnerability Vital Microsoft Workplace Excel CVE-2026-32197 Microsoft Excel Distant Code Execution Vulnerability Vital Microsoft Workplace Excel CVE-2026-32188 Microsoft Excel Info Disclosure Vulnerability Vital Microsoft Workplace Excel CVE-2026-32189 Microsoft Excel Distant Code Execution Vulnerability Vital Microsoft Workplace PowerPoint CVE-2026-32200 Microsoft PowerPoint Distant Code Execution Vulnerability Vital Microsoft Workplace SharePoint CVE-2026-32201 Microsoft SharePoint Server Spoofing Vulnerability Vital Microsoft Workplace SharePoint CVE-2026-20945 Microsoft SharePoint Server Spoofing Vulnerability Vital Microsoft Workplace Phrase CVE-2026-23657 Microsoft Phrase Distant Code Execution Vulnerability Vital Microsoft Workplace Phrase CVE-2026-33115 Microsoft Phrase Distant Code Execution Vulnerability Vital Microsoft Workplace Phrase CVE-2026-33114 Microsoft Phrase Distant Code Execution Vulnerability Vital Microsoft Workplace Phrase CVE-2026-33095 Microsoft Phrase Distant Code Execution Vulnerability Vital Microsoft Workplace Phrase CVE-2026-33822 Microsoft Phrase Info Disclosure Vulnerability Vital Microsoft Energy Apps CVE-2026-26149 Microsoft Energy Apps Safety Function Bypass Vital Microsoft PowerShell CVE-2026-26143 Microsoft PowerShell Safety Function Bypass Vulnerability Vital Microsoft PowerShell CVE-2026-26170 PowerShell Elevation of Privilege Vulnerability Vital Microsoft Home windows CVE-2026-32181 Linked Person Experiences and Telemetry Service Denial of Service Vulnerability Vital Microsoft Home windows Search Element CVE-2026-27909 Home windows Search Service Elevation of Privilege Vulnerability Vital Microsoft Home windows Speech CVE-2026-32153 Home windows Speech Runtime Elevation of Privilege Vulnerability Vital Node.js CVE-2026-21637 HackerOne: CVE-2026-21637 TLS PSK/ALPN Callback Exceptions Bypass Error Handlers Average Distant Desktop Shopper CVE-2026-32157 Distant Desktop Shopper Distant Code Execution Vulnerability Vital Function: Home windows Hyper-V CVE-2026-32149 Home windows Hyper-V Distant Code Execution Vulnerability Vital Function: Home windows Hyper-V CVE-2026-26156 Home windows Hyper-V Distant Code Execution Vulnerability Vital SQL Server CVE-2026-33120 Microsoft SQL Server Distant Code Execution Vulnerability Vital SQL Server CVE-2026-32176 SQL Server Elevation of Privilege Vulnerability Vital SQL Server CVE-2026-32167 SQL Server Elevation of Privilege Vulnerability Vital Common Plug and Play (upnp.dll) CVE-2026-32212 Common Plug and Play (upnp.dll) Info Disclosure Vulnerability Vital Common Plug and Play (upnp.dll) CVE-2026-32214 Common Plug and Play (upnp.dll) Info Disclosure Vulnerability Vital Home windows Energetic Listing CVE-2026-32072 Energetic Listing Spoofing Vulnerability Vital Home windows Energetic Listing CVE-2026-33826 Home windows Energetic Listing Distant Code Execution Vulnerability Vital Home windows Admin Heart CVE-2026-32196 Home windows Admin Heart Spoofing Vulnerability Vital Home windows Superior Rasterization Platform CVE-2026-26178 Home windows Superior Rasterization Platform Elevation of Privilege Vulnerability Vital Home windows Ancillary Perform Driver for WinSock CVE-2026-27922 Home windows Ancillary Perform Driver for WinSock Elevation of Privilege Vulnerability Vital Home windows Ancillary Perform Driver for WinSock CVE-2026-26177 Home windows Ancillary Perform Driver for WinSock Elevation of Privilege Vulnerability Vital Home windows Ancillary Perform Driver for WinSock CVE-2026-32073 Home windows Ancillary Perform Driver for WinSock Elevation of Privilege Vulnerability Vital Home windows Ancillary Perform Driver for WinSock CVE-2026-26168 Home windows Ancillary Perform Driver for WinSock Elevation of Privilege Vulnerability Vital Home windows Ancillary Perform Driver for WinSock CVE-2026-26182 Home windows Ancillary Perform Driver for WinSock Elevation of Privilege Vulnerability Vital Home windows Ancillary Perform Driver for WinSock CVE-2026-26173 Home windows Ancillary Perform Driver for WinSock Elevation of Privilege Vulnerability Vital Home windows Ancillary Perform Driver for WinSock CVE-2026-33100 Home windows Ancillary Perform Driver for WinSock Elevation of Privilege Vulnerability Vital Home windows Ancillary Perform Driver for WinSock CVE-2026-33099 Home windows Ancillary Perform Driver for WinSock Elevation of Privilege Vulnerability Vital Home windows Biometric Service CVE-2026-32088 Home windows Biometric Service Safety Function Bypass Vulnerability Vital Home windows BitLocker CVE-2026-27913 Home windows BitLocker Safety Function Bypass Vulnerability Vital Home windows Boot Loader CVE-2026-0390 UEFI Safe Boot Safety Function Bypass Vulnerability Vital Home windows Boot Supervisor CVE-2026-26175 Home windows Boot Supervisor Safety Function Bypass Vulnerability Vital Home windows Shopper Aspect Caching driver (csc.sys) CVE-2026-26176 Home windows Shopper Aspect Caching driver (csc.sys) Elevation of Privilege Vulnerability Vital Home windows Cloud Information Mini Filter Driver CVE-2026-27926 Home windows Cloud Information Mini Filter Driver Elevation of Privilege Vulnerability Vital Home windows COM CVE-2026-32162 Home windows COM Elevation of Privilege Vulnerability Vital Home windows COM CVE-2026-20806 Home windows COM Server Info Disclosure Vulnerability Vital Home windows Widespread Log File System Driver CVE-2026-32070 Home windows Widespread Log File System Driver Elevation of Privilege Vulnerability Vital Home windows Container Isolation FS Filter Driver CVE-2026-33098 Home windows Container Isolation FS Filter Driver Elevation of Privilege Vulnerability Vital Home windows Cryptographic Providers CVE-2026-26152 Microsoft Cryptographic Providers Elevation of Privilege Vulnerability Vital Home windows Encrypting File System (EFS) CVE-2026-26153 Home windows Encrypted File System (EFS) Elevation of Privilege Vulnerability Vital Home windows File Explorer CVE-2026-32084 Home windows Print Spooler Info Disclosure Vulnerability Vital Home windows File Explorer CVE-2026-32079 Net Account Supervisor Info Disclosure Vulnerability Vital Home windows File Explorer CVE-2026-32081 Package deal Catalog Info Disclosure Vulnerability Vital Home windows GDI CVE-2026-27931 Home windows GDI Info Disclosure Vulnerability Vital Home windows GDI CVE-2026-27930 Home windows GDI Info Disclosure Vulnerability Vital Home windows Hi there CVE-2026-27928 Home windows Hi there Safety Function Bypass Vulnerability Vital Home windows Hi there CVE-2026-27906 Home windows Hi there Safety Function Bypass Vulnerability Vital Home windows HTTP.sys CVE-2026-33096 HTTP.sys Denial of Service Vulnerability Vital Home windows IKE Extension CVE-2026-33824 Home windows Web Key Change (IKE) Service Extensions Distant Code Execution Vulnerability Vital Home windows Installer CVE-2026-27910 Home windows Installer Elevation of Privilege Vulnerability Vital Home windows Kerberos CVE-2026-27912 Home windows Kerberos Elevation of Privilege Vulnerability Vital Home windows Kernel CVE-2026-32215 Home windows Kernel Info Disclosure Vulnerability Vital Home windows Kernel CVE-2026-32218 Home windows Kernel Info Disclosure Vulnerability Vital Home windows Kernel CVE-2026-26179 Home windows Kernel Elevation of Privilege Vulnerability Vital Home windows Kernel CVE-2026-32217 Home windows Kernel Info Disclosure Vulnerability Vital Home windows Kernel CVE-2026-26163 Home windows Kernel Elevation of Privilege Vulnerability Vital Home windows Kernel CVE-2026-32195 Home windows Kernel Elevation of Privilege Vulnerability Vital Home windows Kernel CVE-2026-26180 Home windows Kernel Elevation of Privilege Vulnerability Vital Home windows Kernel Reminiscence CVE-2026-26169 Home windows Kernel Reminiscence Info Disclosure Vulnerability Vital Home windows Native Safety Authority Subsystem Service (LSASS) CVE-2026-26155 Microsoft Native Safety Authority Subsystem Service Info Disclosure Vulnerability Vital Home windows Native Safety Authority Subsystem Service (LSASS) CVE-2026-32071 Home windows Native Safety Authority Subsystem Service (LSASS) Denial of Service Vulnerability Vital Home windows LUAFV CVE-2026-27929 Home windows LUA File Virtualization Filter Driver Elevation of Privilege Vulnerability Vital Home windows Administration Providers CVE-2026-20930 Home windows Administration Providers Elevation of Privilege Vulnerability Vital Home windows OLE CVE-2026-26162 Home windows OLE Elevation of Privilege Vulnerability Vital Home windows Print Spooler Parts CVE-2026-33101 Home windows Print Spooler Elevation of Privilege Vulnerability Vital Home windows Projected File System CVE-2026-26184 Home windows Projected File System Elevation of Privilege Vulnerability Vital Home windows Projected File System CVE-2026-32078 Home windows Projected File System Elevation of Privilege Vulnerability Vital Home windows Projected File System CVE-2026-32074 Home windows Projected File System Elevation of Privilege Vulnerability Vital Home windows Projected File System CVE-2026-32069 Home windows Projected File System Elevation of Privilege Vulnerability Vital Home windows Projected File System CVE-2026-27927 Home windows Projected File System Elevation of Privilege Vulnerability Vital Home windows Push Notifications CVE-2026-32159 Home windows Push Notifications Elevation of Privilege Vulnerability Vital Home windows Push Notifications CVE-2026-32160 Home windows Push Notifications Elevation of Privilege Vulnerability Vital Home windows Push Notifications CVE-2026-26167 Home windows Push Notifications Elevation of Privilege Vulnerability Vital Home windows Push Notifications CVE-2026-26172 Home windows Push Notifications Elevation of Privilege Vulnerability Vital Home windows Push Notifications CVE-2026-32158 Home windows Push Notifications Elevation of Privilege Vulnerability Vital Home windows Restoration Setting Agent CVE-2026-20928 Home windows Restoration Setting Safety Function Bypass Vulnerability Vital Home windows Redirected Drive Buffering CVE-2026-32216 Home windows Redirected Drive Buffering System Denial of Service Vulnerability Vital Home windows Distant Desktop CVE-2026-26151 Distant Desktop Spoofing Vulnerability Vital Home windows Distant Desktop Licensing Service CVE-2026-26159 Distant Desktop Licensing Service Elevation of Privilege Vulnerability Vital Home windows Distant Desktop Licensing Service CVE-2026-26160 Distant Desktop Licensing Service Elevation of Privilege Vulnerability Vital Home windows Distant Process Name CVE-2026-32085 Distant Process Name Info Disclosure Vulnerability Vital Home windows RPC API CVE-2026-26183 Distant Entry Administration service/API (RPC server) Elevation of Privilege Vulnerability Vital Home windows Safe Boot CVE-2026-25250 MITRE: CVE-2026-25250 Safe Boot disable Eazy Repair Vital Home windows Sensor Data Service CVE-2026-26161 Home windows Sensor Data Service Elevation of Privilege Vulnerability Vital Home windows Server Replace Service CVE-2026-32224 Home windows Server Replace Service (WSUS) Elevation of Privilege Vulnerability Vital Home windows Server Replace Service CVE-2026-26174 Home windows Server Replace Service (WSUS) Elevation of Privilege Vulnerability Vital Home windows Server Replace Service CVE-2026-26154 Home windows Server Replace Service (WSUS) Tampering Vulnerability Vital Home windows Shell CVE-2026-27918 Home windows Shell Elevation of Privilege Vulnerability Vital Home windows Shell CVE-2026-26165 Home windows Shell Elevation of Privilege Vulnerability Vital Home windows Shell CVE-2026-26166 Home windows Shell Elevation of Privilege Vulnerability Vital Home windows Shell CVE-2026-32225 Home windows Shell Safety Function Bypass Vulnerability Vital Home windows Shell CVE-2026-32151 Home windows Shell Info Disclosure Vulnerability Vital Home windows Shell CVE-2026-32202 Home windows Shell Spoofing Vulnerability Vital Home windows Snipping Device CVE-2026-32183 Home windows Snipping Device Distant Code Execution Vulnerability Vital Home windows Snipping Device CVE-2026-33829 Home windows Snipping Device Spoofing Vulnerability Average Home windows Speech Brokered Api CVE-2026-32089 Home windows Speech Brokered Api Elevation of Privilege Vulnerability Vital Home windows Speech Brokered Api CVE-2026-32090 Home windows Speech Brokered Api Elevation of Privilege Vulnerability Vital Home windows SSDP Service CVE-2026-32083 Home windows Easy Search and Discovery Protocol (SSDP) Service Elevation of Privilege Vulnerability Vital Home windows SSDP Service CVE-2026-32082 Home windows Easy Search and Discovery Protocol (SSDP) Service Elevation of Privilege Vulnerability Vital Home windows SSDP Service CVE-2026-32068 Home windows Easy Search and Discovery Protocol (SSDP) Service Elevation of Privilege Vulnerability Vital Home windows Storage Areas Controller CVE-2026-32076 Home windows Storage Areas Controller Elevation of Privilege Vulnerability Vital Home windows Storage Areas Controller CVE-2026-27907 Home windows Storage Areas Controller Elevation of Privilege Vulnerability Vital Home windows TCP/IP CVE-2026-27921 Home windows TDI Translation Driver (tdx.sys) Elevation of Privilege Vulnerability Vital Home windows TCP/IP CVE-2026-33827 Home windows TCP/IP Distant Code Execution Vulnerability Vital Home windows TDI Translation Driver (tdx.sys) CVE-2026-27908 Home windows TDI Translation Driver (tdx.sys) Elevation of Privilege Vulnerability Vital Home windows Common Plug and Play (UPnP) System Host CVE-2026-27916 Home windows UPnP System Host Elevation of Privilege Vulnerability Vital Home windows Common Plug and Play (UPnP) System Host CVE-2026-32156 Home windows UPnP System Host Distant Code Execution Vulnerability Vital Home windows Common Plug and Play (UPnP) System Host CVE-2026-32077 Home windows UPnP System Host Elevation of Privilege Vulnerability Vital Home windows Common Plug and Play (UPnP) System Host CVE-2026-27915 Home windows UPnP System Host Elevation of Privilege Vulnerability Vital Home windows Common Plug and Play (UPnP) System Host CVE-2026-27919 Home windows UPnP System Host Elevation of Privilege Vulnerability Vital Home windows Common Plug and Play (UPnP) System Host CVE-2026-27925 Home windows UPnP System Host Info Disclosure Vulnerability Vital Home windows Common Plug and Play (UPnP) System Host CVE-2026-32075 Home windows UPnP System Host Elevation of Privilege Vulnerability Vital Home windows Common Plug and Play (UPnP) System Host CVE-2026-27920 Home windows UPnP System Host Elevation of Privilege Vulnerability Vital Home windows USB Print Driver CVE-2026-32223 Home windows USB Printing Stack (usbprint.sys) Elevation of Privilege Vulnerability Vital Home windows Person Interface Core CVE-2026-32165 Home windows Person Interface Core Elevation of Privilege Vulnerability Vital Home windows Person Interface Core CVE-2026-32164 Home windows Person Interface Core Elevation of Privilege Vulnerability Vital Home windows Person Interface Core CVE-2026-27911 Home windows Person Interface Core Elevation of Privilege Vulnerability Vital Home windows Person Interface Core CVE-2026-32163 Home windows Person Interface Core Elevation of Privilege Vulnerability Vital Home windows Virtualization-Based mostly Safety (VBS) Enclave CVE-2026-23670 Home windows Virtualization-Based mostly Safety (VBS) Safety Function Bypass Vulnerability Vital Home windows Virtualization-Based mostly Safety (VBS) Enclave CVE-2026-32220 UEFI Safe Boot Safety Function Bypass Vulnerability Vital Home windows WalletService CVE-2026-32080 Home windows WalletService Elevation of Privilege Vulnerability Vital Home windows WFP NDIS Light-weight Filter Driver (wfplwfs.sys) CVE-2026-27917 Home windows WFP NDIS Light-weight Filter Driver (wfplwfs.sys) Elevation of Privilege Vulnerability Vital Home windows Win32K – GRFX CVE-2026-33104 Win32k Elevation of Privilege Vulnerability Vital Home windows Win32K – ICOMP CVE-2026-32222 Home windows Win32k Elevation of Privilege Vulnerability Vital