# KB5026368: May 2023 cumulative update for Windows 11 21H2

KB5026368, released May 9, 2023, fixes 21 CVEs across 2 products. 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/kb5026368
- Platform: Microsoft
- Released: May 9, 2023
- Priority: Urgent (Closes CVE-2023-29325, exploitation more likely)
- CVEs: 21, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5026368

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 11 version 21H2 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-11-version-21h2-for-arm64-based-systems.md) |  | 22000.1936 |
| [Windows 11 version 21H2 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-11-version-21h2-for-x64-based-systems.md) |  | 22000.1936 |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-29325](https://patchblox.com/security/data/cve/CVE-2023-29325.md) | Urgent | Windows OLE | 8.1 | 0.8389 | Disclosed |
| [CVE-2023-24949](https://patchblox.com/security/data/cve/CVE-2023-24949.md) | Urgent | Windows Kernel | 7.8 | 0.2462 | More likely |
| [CVE-2023-24902](https://patchblox.com/security/data/cve/CVE-2023-24902.md) | Urgent | Windows Win32K | 7.8 | 0.0509 | More likely |
| [CVE-2023-24943](https://patchblox.com/security/data/cve/CVE-2023-24943.md) | Urgent | Windows PGM | 9.8 | 0.0468 |  |
| [CVE-2023-29324](https://patchblox.com/security/data/cve/CVE-2023-29324.md) | Urgent | Windows MSHTML Platform | 6.5 | 0.0284 | More likely |
| [CVE-2023-28283](https://patchblox.com/security/data/cve/CVE-2023-28283.md) | Urgent | Windows LDAP - Lightweight Directory Access Protocol | 8.1 | 0.0097 |  |
| [CVE-2023-24903](https://patchblox.com/security/data/cve/CVE-2023-24903.md) | Urgent | Windows Secure Socket Tunneling Protocol (SSTP) | 8.1 | 0.0092 |  |
| [CVE-2023-24940](https://patchblox.com/security/data/cve/CVE-2023-24940.md) | High | Windows PGM | 7.5 | 0.0517 |  |
| [CVE-2023-24939](https://patchblox.com/security/data/cve/CVE-2023-24939.md) | High | Windows NFS Portmapper | 7.5 | 0.0466 |  |
| [CVE-2022-29900](https://patchblox.com/security/data/cve/CVE-2022-29900.md) | High | AMD CPU Branch | 7.8 | 0.0394 |  |
| [CVE-2023-24942](https://patchblox.com/security/data/cve/CVE-2023-24942.md) | High | Windows Remote Procedure Call Runtime | 7.5 | 0.0190 |  |
| [CVE-2023-24901](https://patchblox.com/security/data/cve/CVE-2023-24901.md) | High | Windows NFS Portmapper | 7.5 | 0.0159 |  |
| [CVE-2023-24948](https://patchblox.com/security/data/cve/CVE-2023-24948.md) | High | Microsoft Bluetooth Driver | 7.4 | 0.0095 |  |
| [CVE-2022-26928](https://patchblox.com/security/data/cve/CVE-2022-26928.md) | High | Windows Photo Import API | 7.0 | 0.0079 |  |
| [CVE-2023-24905](https://patchblox.com/security/data/cve/CVE-2023-24905.md) | High | Remote Desktop Client | 7.8 | 0.0067 |  |
| [CVE-2023-24946](https://patchblox.com/security/data/cve/CVE-2023-24946.md) | High | Windows Backup Engine | 7.8 | 0.0044 |  |
| [CVE-2023-24899](https://patchblox.com/security/data/cve/CVE-2023-24899.md) | High | Microsoft Graphics Component | 7.0 | 0.0034 |  |
| [CVE-2023-24900](https://patchblox.com/security/data/cve/CVE-2023-24900.md) | Routine | Windows NTLM | 5.9 | 0.0123 |  |
| [CVE-2023-24944](https://patchblox.com/security/data/cve/CVE-2023-24944.md) | Routine | Microsoft Bluetooth Driver | 6.5 | 0.0069 |  |
| [CVE-2023-24945](https://patchblox.com/security/data/cve/CVE-2023-24945.md) | Routine | Windows iSCSI Target Service | 5.5 | 0.0056 |  |
| [CVE-2023-28251](https://patchblox.com/security/data/cve/CVE-2023-28251.md) | Routine | Windows Secure Boot | 5.5 | 0.0045 |  |

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Data as of 2026-11-07T06:34:28Z 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