# KB5033372: December 2023 cumulative update for Windows 10 21H2

KB5033372, released December 12, 2023, fixes 15 CVEs across 6 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/microsoft/kb5033372
- Platform: Microsoft
- Released: Dec 12, 2023
- Priority: Urgent (Closes CVE-2023-35628, exploitation more likely)
- CVEs: 15, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5033372

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 10 Version 21H2 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-21h2-for-32-bit-systems.md) |  |  |
| [Windows 10 Version 21H2 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-21h2-for-arm64-based-systems.md) |  |  |
| [Windows 10 Version 21H2 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-21h2-for-x64-based-systems.md) |  |  |
| [Windows 10 Version 22H2 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-22h2-for-32-bit-systems.md) |  |  |
| [Windows 10 Version 22H2 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-22h2-for-arm64-based-systems.md) |  |  |
| [Windows 10 Version 22H2 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-22h2-for-x64-based-systems.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-35628](https://patchblox.com/security/data/cve/CVE-2023-35628.md) | Urgent | Windows MSHTML Platform | 8.1 | 0.9282 | More likely |
| [CVE-2023-36005](https://patchblox.com/security/data/cve/CVE-2023-36005.md) | Urgent | Windows Telephony Server | 7.5 | 0.2386 | More likely |
| [CVE-2023-35641](https://patchblox.com/security/data/cve/CVE-2023-35641.md) | Urgent | Windows Internet Connection Sharing (ICS) | 8.8 | 0.0722 | More likely |
| [CVE-2023-35632](https://patchblox.com/security/data/cve/CVE-2023-35632.md) | Urgent | Windows Internet Connection Sharing (ICS) | 7.8 | 0.0654 | More likely |
| [CVE-2023-35644](https://patchblox.com/security/data/cve/CVE-2023-35644.md) | Urgent | Windows Kernel-Mode Drivers | 7.8 | 0.0625 | More likely |
| [CVE-2023-35630](https://patchblox.com/security/data/cve/CVE-2023-35630.md) | Urgent | Windows Internet Connection Sharing (ICS) | 8.8 | 0.0613 |  |
| [CVE-2023-36696](https://patchblox.com/security/data/cve/CVE-2023-36696.md) | Urgent | Windows Cloud Files Mini Filter Driver | 7.8 | 0.0086 | More likely |
| [CVE-2023-36011](https://patchblox.com/security/data/cve/CVE-2023-36011.md) | Urgent | Windows Win32K | 7.8 | 0.0071 | More likely |
| [CVE-2023-35639](https://patchblox.com/security/data/cve/CVE-2023-35639.md) | High | Windows ODBC Driver | 8.8 | 0.0237 |  |
| [CVE-2023-36006](https://patchblox.com/security/data/cve/CVE-2023-36006.md) | High | Microsoft WDAC OLE DB provider for SQL | 8.8 | 0.0189 |  |
| [CVE-2023-36004](https://patchblox.com/security/data/cve/CVE-2023-36004.md) | High | Windows DPAPI (Data Protection Application Programming Interface) | 7.5 | 0.0137 |  |
| [CVE-2023-21740](https://patchblox.com/security/data/cve/CVE-2023-21740.md) | High | Windows Media | 7.8 | 0.0109 |  |
| [CVE-2023-20588](https://patchblox.com/security/data/cve/CVE-2023-20588.md) | Routine | Chipsets | 6.0 | 0.1115 | Disclosed |
| [CVE-2023-36003](https://patchblox.com/security/data/cve/CVE-2023-36003.md) | Routine | XAML Diagnostics | 6.7 | 0.0285 |  |
| [CVE-2023-35642](https://patchblox.com/security/data/cve/CVE-2023-35642.md) | Routine | Windows Internet Connection Sharing (ICS) | 6.5 | 0.0128 |  |

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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