# KB5078734: March 2026 cumulative update for Windows Server 23H2 KB5078734, released March 10, 2026, fixes 40 CVEs in Windows Server 2022, 23H2 Edition (Server Core installation) (build 25398.2207). None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported. - Web page: https://patchblox.com/security/fix/microsoft/kb5078734 - Platform: Microsoft - Released: Mar 10, 2026 - Priority: Urgent (Closes CVE-2026-24294, exploitation more likely) - CVEs: 40, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://support.microsoft.com/help/5078734 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows Server 2022, 23H2 Edition (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2022-23h2-edition-server-core-installation.md) | | 25398.2207 | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2026-24294](https://patchblox.com/security/data/cve/CVE-2026-24294.md) | Urgent | Windows SMB Server | 7.8 | 0.0516 | More likely | | [CVE-2026-24289](https://patchblox.com/security/data/cve/CVE-2026-24289.md) | Urgent | Windows Kernel | 7.8 | 0.0488 | More likely | | [CVE-2026-23668](https://patchblox.com/security/data/cve/CVE-2026-23668.md) | Urgent | Microsoft Graphics Component | 7.0 | 0.0387 | More likely | | [CVE-2026-25187](https://patchblox.com/security/data/cve/CVE-2026-25187.md) | Urgent | Winlogon | 7.8 | 0.0341 | More likely | | [CVE-2026-24291](https://patchblox.com/security/data/cve/CVE-2026-24291.md) | Urgent | Windows Accessibility Infrastructure (ATBroker.exe) | 7.8 | 0.0334 | More likely | | [CVE-2026-26132](https://patchblox.com/security/data/cve/CVE-2026-26132.md) | Urgent | Windows Kernel | 7.8 | 0.0217 | More likely | | [CVE-2026-25181](https://patchblox.com/security/data/cve/CVE-2026-25181.md) | High | Windows GDI+ | 7.5 | 0.0157 | | | [CVE-2026-23674](https://patchblox.com/security/data/cve/CVE-2026-23674.md) | High | Windows MapUrlToZone | 7.5 | 0.0139 | | | [CVE-2026-25177](https://patchblox.com/security/data/cve/CVE-2026-25177.md) | High | Active Directory Domain Services | 8.8 | 0.0135 | | | [CVE-2026-23669](https://patchblox.com/security/data/cve/CVE-2026-23669.md) | High | RPC Runtime | 8.8 | 0.0104 | | | [CVE-2026-25172](https://patchblox.com/security/data/cve/CVE-2026-25172.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.0 | 0.0100 | | | [CVE-2026-25173](https://patchblox.com/security/data/cve/CVE-2026-25173.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.0 | 0.0100 | | | [CVE-2026-26111](https://patchblox.com/security/data/cve/CVE-2026-26111.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.0 | 0.0090 | | | [CVE-2026-26128](https://patchblox.com/security/data/cve/CVE-2026-26128.md) | High | Windows SMB Server | 7.8 | 0.0069 | | | [CVE-2026-25188](https://patchblox.com/security/data/cve/CVE-2026-25188.md) | High | Windows Telephony Service | 8.8 | 0.0058 | | | [CVE-2026-24293](https://patchblox.com/security/data/cve/CVE-2026-24293.md) | High | Windows Ancillary Function Driver for WinSock | 7.8 | 0.0057 | | | [CVE-2026-25190](https://patchblox.com/security/data/cve/CVE-2026-25190.md) | High | Windows GDI | 7.8 | 0.0056 | | | [CVE-2026-24285](https://patchblox.com/security/data/cve/CVE-2026-24285.md) | High | Windows Win32K | 7.0 | 0.0046 | | | [CVE-2026-24283](https://patchblox.com/security/data/cve/CVE-2026-24283.md) | High | Windows File Server | 8.8 | 0.0043 | | | [CVE-2026-23673](https://patchblox.com/security/data/cve/CVE-2026-23673.md) | High | Windows Resilient File System (ReFS) | 7.8 | 0.0043 | | | [CVE-2026-25165](https://patchblox.com/security/data/cve/CVE-2026-25165.md) | High | Windows Performance Counters | 7.8 | 0.0043 | | | [CVE-2026-25176](https://patchblox.com/security/data/cve/CVE-2026-25176.md) | High | Windows Ancillary Function Driver for WinSock | 7.8 | 0.0042 | | | [CVE-2026-24292](https://patchblox.com/security/data/cve/CVE-2026-24292.md) | High | Connected Devices Platform Service (Cdpsvc) | 7.8 | 0.0039 | | | [CVE-2026-25174](https://patchblox.com/security/data/cve/CVE-2026-25174.md) | High | Windows Extensible File Allocation | 7.8 | 0.0039 | | | [CVE-2026-25175](https://patchblox.com/security/data/cve/CVE-2026-25175.md) | High | Windows NTFS | 7.8 | 0.0039 | | | [CVE-2026-23672](https://patchblox.com/security/data/cve/CVE-2026-23672.md) | High | Windows Universal Disk Format File System Driver (UDFS) | 7.8 | 0.0038 | | | [CVE-2026-24287](https://patchblox.com/security/data/cve/CVE-2026-24287.md) | High | Windows Kernel | 7.8 | 0.0038 | | | [CVE-2026-24290](https://patchblox.com/security/data/cve/CVE-2026-24290.md) | High | Windows Projected File System | 7.8 | 0.0037 | | | [CVE-2026-25179](https://patchblox.com/security/data/cve/CVE-2026-25179.md) | High | Windows Ancillary Function Driver for WinSock | 7.0 | 0.0037 | | | [CVE-2026-25170](https://patchblox.com/security/data/cve/CVE-2026-25170.md) | High | Role: Windows Hyper-V | 7.0 | 0.0031 | | | [CVE-2026-25171](https://patchblox.com/security/data/cve/CVE-2026-25171.md) | High | Windows Authentication Methods | 7.0 | 0.0031 | | | [CVE-2026-25178](https://patchblox.com/security/data/cve/CVE-2026-25178.md) | High | Windows Ancillary Function Driver for WinSock | 7.0 | 0.0031 | | | [CVE-2026-23671](https://patchblox.com/security/data/cve/CVE-2026-23671.md) | High | Windows Bluetooth RFCOM Protocol Driver | 7.0 | 0.0024 | | | [CVE-2026-24295](https://patchblox.com/security/data/cve/CVE-2026-24295.md) | High | Windows Device Association Service | 7.0 | 0.0024 | | | [CVE-2026-24296](https://patchblox.com/security/data/cve/CVE-2026-24296.md) | High | Windows Device Association Service | 7.0 | 0.0024 | | | [CVE-2026-25185](https://patchblox.com/security/data/cve/CVE-2026-25185.md) | Routine | Windows Shell Link Processing | 5.3 | 0.0109 | | | [CVE-2026-25180](https://patchblox.com/security/data/cve/CVE-2026-25180.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0074 | | | [CVE-2026-25186](https://patchblox.com/security/data/cve/CVE-2026-25186.md) | Routine | Windows Accessibility Infrastructure (ATBroker.exe) | 5.5 | 0.0069 | | | [CVE-2026-25168](https://patchblox.com/security/data/cve/CVE-2026-25168.md) | Routine | Microsoft Graphics Component | 6.2 | 0.0052 | | | [CVE-2026-25169](https://patchblox.com/security/data/cve/CVE-2026-25169.md) | Routine | Microsoft Graphics Component | 6.2 | 0.0049 | | --- Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.