# CVE-2018-8219: Hypervisor Code Integrity Elevation of Privilege Vulnerability

CVE-2018-8219 is fixed in 8 products on 1 platform, first by KB4284880, released June 12, 2018. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2018-8219
- Priority: High
- CVSS: 7.6 (Important)
- EPSS: 0.0120
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Jun 12, 2018
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8219

## Description

<p>An elevation of privilege vulnerability exists when Windows Hyper-V instruction emulation fails to properly enforce privilege levels. An attacker who successfully exploited this vulnerability could gain elevated privileges on a target guest operating system. The host operating system is not vulnerable to this attack.</p> <p>This vulnerability by itself does not allow arbitrary code to be run.  However, the vulnerability could be used in conjunction with one or more vulnerabilities (e.g. a remote code execution vulnerability and another elevation of privilege) that could take advantage of the elevated privileges when running.</p> <p>The update addresses the vulnerability by correcting how privileges are enforced by Windows Hyper-V instruction emulation.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.2312 | [KB4284880](https://patchblox.com/security/data/fix/microsoft/kb4284880.md) | Jun 12, 2018 |
| Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.1155 | [KB4284874](https://patchblox.com/security/data/fix/microsoft/kb4284874.md) | Jun 12, 2018 |
| Microsoft | Windows 10 Version 1709 for x64-based Systems | 16299.492 | [KB4284819](https://patchblox.com/security/data/fix/microsoft/kb4284819.md) | Jun 12, 2018 |
| Microsoft | Windows 10 Version 1803 for x64-based Systems | 17134.112 | [KB4284835](https://patchblox.com/security/data/fix/microsoft/kb4284835.md) | Jun 12, 2018 |
| Microsoft | Windows Server 2016 | 14393.2312 | [KB4284880](https://patchblox.com/security/data/fix/microsoft/kb4284880.md) | Jun 12, 2018 |
| Microsoft | Windows Server 2016 (Server Core installation) | 14393.2312 | [KB4284880](https://patchblox.com/security/data/fix/microsoft/kb4284880.md) | Jun 12, 2018 |
| Microsoft | Windows Server, version 1709  (Server Core Installation) | 16299.492 | [KB4284819](https://patchblox.com/security/data/fix/microsoft/kb4284819.md) | Jun 12, 2018 |
| Microsoft | Windows Server, version 1803  (Server Core Installation) | 17134.112 | [KB4284835](https://patchblox.com/security/data/fix/microsoft/kb4284835.md) | Jun 12, 2018 |

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Data as of 2026-11-09T07:25:28Z 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

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