# KB5009566: January 2022 cumulative update for Windows 11 21H2

KB5009566, released January 11, 2022, fixes 65 CVEs across 2 products. 2 of them are being exploited (CVE-2022-21882); 2 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb5009566
- Platform: Microsoft
- Released: Jan 11, 2022
- Priority: Patch now (Closes CVE-2022-21882, exploited (CISA KEV, ransomware))
- CVEs: 65, exploited: 2, on CISA KEV: 2
- Vendor advisory: https://support.microsoft.com/help/5009566

## 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) |  | 22000.434 |
| [Windows 11 version 21H2 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-11-version-21h2-for-x64-based-systems.md) |  | 22000.434 |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-21882](https://patchblox.com/security/data/cve/CVE-2022-21882.md) | Patch now | Windows Win32K | 7.0 | 0.5921 | CISA KEV, Ransomware |
| [CVE-2022-21919](https://patchblox.com/security/data/cve/CVE-2022-21919.md) | Patch now | Windows User Profile Service | 7.0 | 0.0257 | CISA KEV, Disclosed |
| [CVE-2022-21907](https://patchblox.com/security/data/cve/CVE-2022-21907.md) | Urgent | Windows HTTP Protocol Stack | 9.8 | 0.9279 | More likely |
| [CVE-2022-21881](https://patchblox.com/security/data/cve/CVE-2022-21881.md) | Urgent | Windows Kernel | 7.0 | 0.2452 | More likely |
| [CVE-2021-22947](https://patchblox.com/security/data/cve/CVE-2021-22947.md) | Urgent | Open Source Software | 6.1 | 0.0301 | Disclosed |
| [CVE-2022-21857](https://patchblox.com/security/data/cve/CVE-2022-21857.md) | Urgent | Windows Active Directory | 8.8 | 0.0264 |  |
| [CVE-2022-21887](https://patchblox.com/security/data/cve/CVE-2022-21887.md) | Urgent | Windows Win32K | 7.0 | 0.0112 | More likely |
| [CVE-2022-21897](https://patchblox.com/security/data/cve/CVE-2022-21897.md) | Urgent | Windows Common Log File System Driver | 7.8 | 0.0109 | More likely |
| [CVE-2022-21916](https://patchblox.com/security/data/cve/CVE-2022-21916.md) | Urgent | Windows Common Log File System Driver | 7.8 | 0.0100 | More likely |
| [CVE-2022-21908](https://patchblox.com/security/data/cve/CVE-2022-21908.md) | Urgent | Windows Installer | 7.8 | 0.0093 | More likely |
| [CVE-2022-21885](https://patchblox.com/security/data/cve/CVE-2022-21885.md) | Urgent | Windows Remote Access Connection Manager | 7.8 | 0.0069 | More likely |
| [CVE-2022-21914](https://patchblox.com/security/data/cve/CVE-2022-21914.md) | Urgent | Windows Remote Access Connection Manager | 7.8 | 0.0069 | More likely |
| [CVE-2022-21833](https://patchblox.com/security/data/cve/CVE-2022-21833.md) | Urgent | Windows Virtual Machine IDE Drive | 7.8 | 0.0065 |  |
| [CVE-2022-21893](https://patchblox.com/security/data/cve/CVE-2022-21893.md) | High | Windows RDP | 8.0 | 0.0863 |  |
| [CVE-2022-21849](https://patchblox.com/security/data/cve/CVE-2022-21849.md) | High | Windows IKE Extension | 9.8 | 0.0659 |  |
| [CVE-2022-21883](https://patchblox.com/security/data/cve/CVE-2022-21883.md) | High | Windows IKE Extension | 7.5 | 0.0464 |  |
| [CVE-2022-21848](https://patchblox.com/security/data/cve/CVE-2022-21848.md) | High | Windows IKE Extension | 7.5 | 0.0440 |  |
| [CVE-2022-21880](https://patchblox.com/security/data/cve/CVE-2022-21880.md) | High | Microsoft Graphics Component | 7.5 | 0.0410 |  |
| [CVE-2022-21843](https://patchblox.com/security/data/cve/CVE-2022-21843.md) | High | Windows IKE Extension | 7.5 | 0.0356 |  |
| [CVE-2022-21889](https://patchblox.com/security/data/cve/CVE-2022-21889.md) | High | Windows IKE Extension | 7.5 | 0.0320 |  |
| [CVE-2022-21890](https://patchblox.com/security/data/cve/CVE-2022-21890.md) | High | Windows IKE Extension | 7.5 | 0.0320 |  |
| [CVE-2022-21850](https://patchblox.com/security/data/cve/CVE-2022-21850.md) | High | Windows RDP | 8.8 | 0.0294 |  |
| [CVE-2022-21851](https://patchblox.com/security/data/cve/CVE-2022-21851.md) | High | Windows RDP | 8.8 | 0.0294 |  |
| [CVE-2022-21920](https://patchblox.com/security/data/cve/CVE-2022-21920.md) | High | Windows Kerberos | 8.8 | 0.0293 |  |
| [CVE-2022-21922](https://patchblox.com/security/data/cve/CVE-2022-21922.md) | High | Windows Remote Procedure Call Runtime | 8.8 | 0.0293 |  |
| [CVE-2021-36976](https://patchblox.com/security/data/cve/CVE-2021-36976.md) | High | Windows Libarchive | n/a | 0.0285 | Disclosed |
| [CVE-2022-21888](https://patchblox.com/security/data/cve/CVE-2022-21888.md) | High | Windows Modern Execution Server | 7.8 | 0.0269 |  |
| [CVE-2022-21874](https://patchblox.com/security/data/cve/CVE-2022-21874.md) | High | Windows Security Center | 7.8 | 0.0248 | Disclosed |
| [CVE-2022-21901](https://patchblox.com/security/data/cve/CVE-2022-21901.md) | High | Role: Windows Hyper-V | 9.0 | 0.0095 |  |
| [CVE-2022-21864](https://patchblox.com/security/data/cve/CVE-2022-21864.md) | High | Windows UI Immersive Server | 7.0 | 0.0079 |  |
| [CVE-2022-21836](https://patchblox.com/security/data/cve/CVE-2022-21836.md) | High | Windows Certificates | 7.8 | 0.0072 | Disclosed |
| [CVE-2022-21852](https://patchblox.com/security/data/cve/CVE-2022-21852.md) | High | Windows DWM Core Library | 7.8 | 0.0071 |  |
| [CVE-2022-21858](https://patchblox.com/security/data/cve/CVE-2022-21858.md) | High | Windows Bind Filter Driver | 7.8 | 0.0071 |  |
| [CVE-2022-21871](https://patchblox.com/security/data/cve/CVE-2022-21871.md) | High | Windows Diagnostic Hub | 7.0 | 0.0070 |  |
| [CVE-2022-21870](https://patchblox.com/security/data/cve/CVE-2022-21870.md) | High | Tablet Windows User Interface | 7.0 | 0.0069 |  |
| [CVE-2022-21872](https://patchblox.com/security/data/cve/CVE-2022-21872.md) | High | Windows Event Tracing | 7.0 | 0.0069 |  |
| [CVE-2022-21873](https://patchblox.com/security/data/cve/CVE-2022-21873.md) | High | Windows Tile Data Repository | 7.0 | 0.0069 |  |
| [CVE-2022-21835](https://patchblox.com/security/data/cve/CVE-2022-21835.md) | High | Windows Cryptographic Services | 7.8 | 0.0069 |  |
| [CVE-2022-21902](https://patchblox.com/security/data/cve/CVE-2022-21902.md) | High | Windows DWM Core Library | 7.8 | 0.0068 |  |
| [CVE-2022-21861](https://patchblox.com/security/data/cve/CVE-2022-21861.md) | High | Windows Task Flow Data Engine | 7.0 | 0.0068 |  |
| [CVE-2022-21834](https://patchblox.com/security/data/cve/CVE-2022-21834.md) | High | Windows User-mode Driver Framework | 7.0 | 0.0065 |  |
| [CVE-2022-21862](https://patchblox.com/security/data/cve/CVE-2022-21862.md) | High | Windows Application Model | 7.0 | 0.0065 |  |
| [CVE-2022-21896](https://patchblox.com/security/data/cve/CVE-2022-21896.md) | High | Windows DWM Core Library | 7.0 | 0.0060 |  |
| [CVE-2022-21866](https://patchblox.com/security/data/cve/CVE-2022-21866.md) | High | Windows System Launcher | 7.0 | 0.0060 |  |
| [CVE-2022-21894](https://patchblox.com/security/data/cve/CVE-2022-21894.md) | Routine | Windows Secure Boot | 4.4 | 0.0912 |  |
| [CVE-2022-21924](https://patchblox.com/security/data/cve/CVE-2022-21924.md) | Routine | Windows Workstation Service Remote Protocol | 5.3 | 0.0307 |  |
| [CVE-2022-21877](https://patchblox.com/security/data/cve/CVE-2022-21877.md) | Routine | Windows Storage Spaces Controller | 5.5 | 0.0294 |  |
| [CVE-2022-21915](https://patchblox.com/security/data/cve/CVE-2022-21915.md) | Routine | Microsoft Graphics Component | 6.5 | 0.0292 |  |
| [CVE-2022-21913](https://patchblox.com/security/data/cve/CVE-2022-21913.md) | Routine | Windows Local Security Authority | 5.3 | 0.0284 |  |
| [CVE-2022-21838](https://patchblox.com/security/data/cve/CVE-2022-21838.md) | Routine | Windows Cleanup Manager | 5.5 | 0.0152 |  |
| [CVE-2022-21876](https://patchblox.com/security/data/cve/CVE-2022-21876.md) | Routine | Windows Win32K | 5.5 | 0.0132 |  |
| [CVE-2022-21906](https://patchblox.com/security/data/cve/CVE-2022-21906.md) | Routine | Windows Defender | 5.5 | 0.0113 |  |
| [CVE-2022-21918](https://patchblox.com/security/data/cve/CVE-2022-21918.md) | Routine | Windows DirectX | 6.5 | 0.0112 |  |
| [CVE-2022-21847](https://patchblox.com/security/data/cve/CVE-2022-21847.md) | Routine | Role: Windows Hyper-V | 6.5 | 0.0102 |  |
| [CVE-2022-21921](https://patchblox.com/security/data/cve/CVE-2022-21921.md) | Routine | Windows Defender | 4.4 | 0.0092 |  |
| [CVE-2022-21892](https://patchblox.com/security/data/cve/CVE-2022-21892.md) | Routine | Windows Resilient File System (ReFS) | 6.8 | 0.0076 |  |
| [CVE-2022-21958](https://patchblox.com/security/data/cve/CVE-2022-21958.md) | Routine | Windows Resilient File System (ReFS) | 6.8 | 0.0076 |  |
| [CVE-2022-21959](https://patchblox.com/security/data/cve/CVE-2022-21959.md) | Routine | Windows Resilient File System (ReFS) | 6.8 | 0.0076 |  |
| [CVE-2022-21960](https://patchblox.com/security/data/cve/CVE-2022-21960.md) | Routine | Windows Resilient File System (ReFS) | 6.8 | 0.0076 |  |
| [CVE-2022-21961](https://patchblox.com/security/data/cve/CVE-2022-21961.md) | Routine | Windows Resilient File System (ReFS) | 6.8 | 0.0076 |  |
| [CVE-2022-21962](https://patchblox.com/security/data/cve/CVE-2022-21962.md) | Routine | Windows Resilient File System (ReFS) | 6.8 | 0.0076 |  |
| [CVE-2022-21905](https://patchblox.com/security/data/cve/CVE-2022-21905.md) | Routine | Role: Windows Hyper-V | 4.6 | 0.0075 |  |
| [CVE-2022-21963](https://patchblox.com/security/data/cve/CVE-2022-21963.md) | Routine | Windows Resilient File System (ReFS) | 6.4 | 0.0072 |  |
| [CVE-2022-21900](https://patchblox.com/security/data/cve/CVE-2022-21900.md) | Routine | Role: Windows Hyper-V | 4.6 | 0.0068 |  |
| [CVE-2022-21928](https://patchblox.com/security/data/cve/CVE-2022-21928.md) | Routine | Windows Resilient File System (ReFS) | 6.3 | 0.0067 |  |

---

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