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Microsoft bu aylık yayınladığı Patch Tuesday güncellemeleri ile 6 adet zero-day güvenlik açığı ve toplamda 58 zafiyeti kapattı.
| .NET | CVE-2026-21218 | .NET Spoofing Vulnerability | Important |
| Azure Arc | CVE-2026-24302 | Azure Arc Elevation of Privilege Vulnerability | Critical |
| Azure Compute Gallery | CVE-2026-23655 | Microsoft ACI Confidential Containers Information Disclosure Vulnerability | Critical |
| Azure Compute Gallery | CVE-2026-21522 | Microsoft ACI Confidential Containers Elevation of Privilege Vulnerability | Critical |
| Azure DevOps Server | CVE-2026-21512 | Azure DevOps Server Cross-Site Scripting Vulnerability | Important |
| Azure Front Door (AFD) | CVE-2026-24300 | Azure Front Door Elevation of Privilege Vulnerability | Critical |
| Azure Function | CVE-2026-21532 | Azure Function Information Disclosure Vulnerability | Critical |
| Azure HDInsights | CVE-2026-21529 | Azure HDInsight Spoofing Vulnerability | Important |
| Azure IoT SDK | CVE-2026-21528 | Azure IoT Explorer Information Disclosure Vulnerability | Important |
| Azure Local | CVE-2026-21228 | Azure Local Remote Code Execution Vulnerability | Important |
| Azure SDK | CVE-2026-21531 | Azure SDK for Python Remote Code Execution Vulnerability | Important |
| Desktop Window Manager | CVE-2026-21519 | Desktop Window Manager Elevation of Privilege Vulnerability | Important |
| Github Copilot | CVE-2026-21516 | GitHub Copilot for Jetbrains Remote Code Execution Vulnerability | Important |
| GitHub Copilot and Visual Studio | CVE-2026-21523 | GitHub Copilot and Visual Studio Code Remote Code Execution Vulnerability | Important |
| GitHub Copilot and Visual Studio | CVE-2026-21256 | GitHub Copilot and Visual Studio Remote Code Execution Vulnerability | Important |
| GitHub Copilot and Visual Studio | CVE-2026-21257 | GitHub Copilot and Visual Studio Elevation of Privilege Vulnerability | Important |
| GitHub Copilot and Visual Studio Code | CVE-2026-21518 | GitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability | Important |
| Mailslot File System | CVE-2026-21253 | Mailslot File System Elevation of Privilege Vulnerability | Important |
| Microsoft Defender for Linux | CVE-2026-21537 | Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability | Important |
| Microsoft Edge (Chromium-based) | CVE-2026-1861 | Chromium: CVE-2026-1861 Heap buffer overflow içinde libvpx | Unknown |
| Microsoft Edge (Chromium-based) | CVE-2026-1862 | Chromium: CVE-2026-1862 Type Confusion içinde V8 | Unknown |
| Microsoft Edge for Android | CVE-2026-0391 | Microsoft Edge (Chromium-based) for Android Spoofing Vulnerability | Moderate |
| Microsoft Exchange Server | CVE-2026-21527 | Microsoft Exchange Server Spoofing Vulnerability | Important |
| Microsoft Graphics Component | CVE-2026-21246 | Windows Graphics Component Elevation of Privilege Vulnerability | Important |
| Microsoft Graphics Component | CVE-2026-21235 | Windows Graphics Component Elevation of Privilege Vulnerability | Important |
| Microsoft Office Excel | CVE-2026-21261 | Microsoft Excel Information Disclosure Vulnerability | Important |
| Microsoft Office Excel | CVE-2026-21258 | Microsoft Excel Information Disclosure Vulnerability | Important |
| Microsoft Office Excel | CVE-2026-21259 | Microsoft Excel Elevation of Privilege Vulnerability | Important |
| Microsoft Office Outlook | CVE-2026-21260 | Microsoft Outlook Spoofing Vulnerability | Important |
| Microsoft Office Outlook | CVE-2026-21511 | Microsoft Outlook Spoofing Vulnerability | Important |
| Microsoft Office Word | CVE-2026-21514 | Microsoft Word Security Feature Bypass Vulnerability | Important |
| MSHTML Framework | CVE-2026-21513 | MSHTML Framework Security Feature Bypass Vulnerability | Important |
| Power BI | CVE-2026-21229 | Power BI Remote Code Execution Vulnerability | Important |
| Role: Windows Hyper-V | CVE-2026-21244 | Windows Hyper-V Remote Code Execution Vulnerability | Important |
| Role: Windows Hyper-V | CVE-2026-21255 | Windows Hyper-V Security Feature Bypass Vulnerability | Important |
| Role: Windows Hyper-V | CVE-2026-21248 | Windows Hyper-V Remote Code Execution Vulnerability | Important |
| Role: Windows Hyper-V | CVE-2026-21247 | Windows Hyper-V Remote Code Execution Vulnerability | Important |
| Windows Ancillary Function Driver for WinSock | CVE-2026-21236 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Important |
| Windows Ancillary Function Driver for WinSock | CVE-2026-21241 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Important |
| Windows Ancillary Function Driver for WinSock | CVE-2026-21238 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Important |
| Windows App for Mac | CVE-2026-21517 | Windows App for Mac Installer Elevation of Privilege Vulnerability | Important |
| Windows Cluster Client Failover | CVE-2026-21251 | Cluster Client Failover (CCF) Elevation of Privilege Vulnerability | Important |
| Windows Connected Devices Platform Service | CVE-2026-21234 | Windows Connected Devices Platform Service Elevation of Privilege Vulnerability | Important |
| Windows GDI+ | CVE-2026-20846 | GDI+ Denial of Service Vulnerability | Important |
| Windows HTTP.sys | CVE-2026-21240 | Windows HTTP.sys Elevation of Privilege Vulnerability | Important |
| Windows HTTP.sys | CVE-2026-21250 | Windows HTTP.sys Elevation of Privilege Vulnerability | Important |
| Windows HTTP.sys | CVE-2026-21232 | Windows HTTP.sys Elevation of Privilege Vulnerability | Important |
| Windows Kernel | CVE-2026-21231 | Windows Kernel Elevation of Privilege Vulnerability | Important |
| Windows Kernel | CVE-2026-21222 | Windows Kernel Information Disclosure Vulnerability | Important |
| Windows Kernel | CVE-2026-21239 | Windows Kernel Elevation of Privilege Vulnerability | Important |
| Windows Kernel | CVE-2026-21245 | Windows Kernel Elevation of Privilege Vulnerability | Important |
| Windows LDAP – Lightweight Directory Access Protocol | CVE-2026-21243 | Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability | Important |
| Windows Notepad App | CVE-2026-20841 | Windows Notepad App Remote Code Execution Vulnerability | Important |
| Windows NTLM | CVE-2026-21249 | Windows NTLM Spoofing Vulnerability | Important |
| Windows Remote Access Connection Manager | CVE-2026-21525 | Windows Remote Access Connection Manager Denial of Service Vulnerability | Moderate |
| Windows Remote Desktop | CVE-2026-21533 | Windows Remote Desktop Services Elevation of Privilege Vulnerability | Important |
| Windows Shell | CVE-2026-21510 | Windows Shell Security Feature Bypass Vulnerability | Important |
| Windows Storage | CVE-2026-21508 | Windows Storage Elevation of Privilege Vulnerability | Important |
| Windows Subsystem for Linux | CVE-2026-21237 | Windows Subsystem for Linux Elevation of Privilege Vulnerability | Important |
| Windows Subsystem for Linux | CVE-2026-21242 | Windows Subsystem for Linux Elevation of Privilege Vulnerability | Important |
| Windows Win32K – GRFX | CVE-2023-2804 | Red Hat, Inc. CVE-2023-2804: Heap Based Overflow libjpeg-turbo | Important |
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