# CVE-2017-0212: Windows Hyper-V vSMB Elevation of Privilege Vulnerability

CVE-2017-0212 is fixed in 6 products on 1 platform, first by KB4019473, released May 9, 2017. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2017-0212
- Priority: High
- CVSS: 7.6 (Important)
- EPSS: 0.0114
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: May 9, 2017
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-0212

## Description

<p>An elevation of privilege vulnerability exists when Windows Hyper-V on a host server fails to properly validate vSMB packet data. An attacker who successfully exploited these vulnerabilities could gain elevated privileges on a target operating system.</p> <p>This vulnerability by itself does not allow arbitrary code to be run.  However, this 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 vulnerabilities by correcting how Windows Hyper-V validates vSMB packet data.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1511 for x64-based Systems | 10586.916 | [KB4019473](https://patchblox.com/security/data/fix/microsoft/kb4019473.md) | May 9, 2017 |
| Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.1198 | [KB4019472](https://patchblox.com/security/data/fix/microsoft/kb4019472.md) | May 9, 2017 |
| Microsoft | Windows 10 Version 1703 for x64-based Systems |  | [KB4016871](https://patchblox.com/security/data/fix/microsoft/kb4016871.md) | May 9, 2017 |
| Microsoft | Windows 10 for x64-based Systems | 10240.17394 | [KB4019474](https://patchblox.com/security/data/fix/microsoft/kb4019474.md) | May 9, 2017 |
| Microsoft | Windows Server 2016 | 14393.1198 | [KB4019472](https://patchblox.com/security/data/fix/microsoft/kb4019472.md) | May 9, 2017 |
| Microsoft | Windows Server 2016 (Server Core installation) | 14393.1198 | [KB4019472](https://patchblox.com/security/data/fix/microsoft/kb4019472.md) | May 9, 2017 |

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Data as of 2026-11-07T18:46:35Z 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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