# KB4534312: January 2020 security update

KB4534312, released January 14, 2020, fixes 16 CVEs across 5 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/kb4534312
- Platform: Microsoft
- Released: Jan 14, 2020
- Priority: Urgent (Closes CVE-2020-0634, exploitation more likely)
- CVEs: 16, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4534312

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows Server 2008 for 32-bit Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-32-bit-systems-service-pack-2.md) |  |  |
| [Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-32-bit-systems-service-pack-2-server-core-installation.md) |  |  |
| [Windows Server 2008 for Itanium-Based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-itanium-based-systems-service-pack-2.md) |  |  |
| [Windows Server 2008 for x64-based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-x64-based-systems-service-pack-2.md) |  |  |
| [Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-x64-based-systems-service-pack-2-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-0634](https://patchblox.com/security/data/cve/CVE-2020-0634.md) | Urgent | Common Log File System Driver | 7.8 | 0.0132 | More likely |
| [CVE-2020-0642](https://patchblox.com/security/data/cve/CVE-2020-0642.md) | High | Microsoft Graphics Component | 7.8 | 0.0161 |  |
| [CVE-2020-0635](https://patchblox.com/security/data/cve/CVE-2020-0635.md) | High | Microsoft Windows | 7.8 | 0.0113 |  |
| [CVE-2020-0625](https://patchblox.com/security/data/cve/CVE-2020-0625.md) | High | Microsoft Windows Search Component | 7.8 | 0.0086 |  |
| [CVE-2020-0627](https://patchblox.com/security/data/cve/CVE-2020-0627.md) | High | Microsoft Windows Search Component | 7.8 | 0.0086 |  |
| [CVE-2020-0628](https://patchblox.com/security/data/cve/CVE-2020-0628.md) | High | Microsoft Windows Search Component | 7.8 | 0.0086 |  |
| [CVE-2020-0631](https://patchblox.com/security/data/cve/CVE-2020-0631.md) | High | Microsoft Windows Search Component | 7.8 | 0.0081 |  |
| [CVE-2020-0620](https://patchblox.com/security/data/cve/CVE-2020-0620.md) | High | Microsoft Windows | 7.8 | 0.0080 |  |
| [CVE-2020-0626](https://patchblox.com/security/data/cve/CVE-2020-0626.md) | High | Microsoft Windows Search Component | 7.8 | 0.0080 |  |
| [CVE-2020-0629](https://patchblox.com/security/data/cve/CVE-2020-0629.md) | High | Microsoft Windows Search Component | 7.8 | 0.0080 |  |
| [CVE-2020-0630](https://patchblox.com/security/data/cve/CVE-2020-0630.md) | High | Microsoft Windows Search Component | 7.8 | 0.0080 |  |
| [CVE-2020-0632](https://patchblox.com/security/data/cve/CVE-2020-0632.md) | High | Microsoft Windows Search Component | 7.8 | 0.0080 |  |
| [CVE-2020-0615](https://patchblox.com/security/data/cve/CVE-2020-0615.md) | Routine | Common Log File System Driver | 5.5 | 0.0180 |  |
| [CVE-2020-0608](https://patchblox.com/security/data/cve/CVE-2020-0608.md) | Routine | Microsoft Windows | 5.5 | 0.0140 |  |
| [CVE-2020-0639](https://patchblox.com/security/data/cve/CVE-2020-0639.md) | Routine | Common Log File System Driver | 5.5 | 0.0140 |  |
| [CVE-2020-0643](https://patchblox.com/security/data/cve/CVE-2020-0643.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0140 |  |

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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