# KB4284878: June 2018 security update

KB4284878, released June 12, 2018, fixes 8 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/microsoft/kb4284878
- Platform: Microsoft
- Released: Jun 12, 2018
- Priority: Urgent (Closes CVE-2018-8225, rated Critical)
- CVEs: 8, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4284878

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 8.1 for 32-bit systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-32-bit-systems.md) |  |  |
| [Windows 8.1 for x64-based systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-x64-based-systems.md) |  |  |
| [Windows Server 2012 R2](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2.md) |  |  |
| [Windows Server 2012 R2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2018-8225](https://patchblox.com/security/data/cve/CVE-2018-8225.md) | Urgent | Microsoft Windows | 8.1 | 0.2460 |  |
| [CVE-2018-8251](https://patchblox.com/security/data/cve/CVE-2018-8251.md) | Urgent | Microsoft Windows | 4.2 | 0.0799 | More likely |
| [CVE-2018-1036](https://patchblox.com/security/data/cve/CVE-2018-1036.md) | Urgent | Microsoft NTFS | 7.0 | 0.0112 | More likely |
| [CVE-2018-8210](https://patchblox.com/security/data/cve/CVE-2018-8210.md) | High | Microsoft Windows | 7.3 | 0.2511 |  |
| [CVE-2018-8169](https://patchblox.com/security/data/cve/CVE-2018-8169.md) | High | HID Parser Library | 7.0 | 0.0120 |  |
| [CVE-2018-1040](https://patchblox.com/security/data/cve/CVE-2018-1040.md) | Routine | Microsoft Windows | 5.3 | 0.0726 |  |
| [CVE-2018-8207](https://patchblox.com/security/data/cve/CVE-2018-8207.md) | Routine | Windows Kernel | 4.7 | 0.0260 |  |
| [CVE-2018-8205](https://patchblox.com/security/data/cve/CVE-2018-8205.md) | Routine | Microsoft Windows | 5.5 | 0.0174 |  |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo