# CVE-2018-8314: Windows Elevation of Privilege Vulnerability

CVE-2018-8314 is fixed in 19 products on 1 platform, first by KB4338829, released July 10, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-8314
- Priority: Routine
- CVSS: 4.3 (Important)
- EPSS: 0.0417
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: yes
- Vendor exploitability assessment: N/A
- Published: Jul 19, 2018
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8314

## Description

<p>An elevation of privilege vulnerability exists when Windows fails a check, allowing a sandbox escape. An attacker who successfully exploited the vulnerability could use the sandbox escape to elevate privileges on an affected system.</p> <p>This vulnerability by itself does not allow arbitrary code execution. However, the vulnerability could allow arbitrary code to run if an attacker uses it in combination with another vulnerability, such as a remote code execution vulnerability or another elevation of privilege vulnerability, that can leverage the elevated privileges when code execution is attempted.</p> <p>The security update addresses the vulnerability by correcting how Windows file picker handles paths.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 for 32-bit Systems | 10240.17918 | [KB4345455](https://patchblox.com/security/data/fix/microsoft/kb4345455.md) | Jul 16, 2018 |
| Microsoft | Windows 10 for 32-bit Systems | 10240.17914 | [KB4338829](https://patchblox.com/security/data/fix/microsoft/kb4338829.md) | Jul 10, 2018 |
| Microsoft | Windows 10 for x64-based Systems | 10240.17918 | [KB4345455](https://patchblox.com/security/data/fix/microsoft/kb4345455.md) | Jul 16, 2018 |
| Microsoft | Windows 10 for x64-based Systems | 10240.17914 | [KB4338829](https://patchblox.com/security/data/fix/microsoft/kb4338829.md) | Jul 10, 2018 |
| Microsoft | Windows 7 for 32-bit Systems Service Pack 1 |  | [KB4338823](https://patchblox.com/security/data/fix/microsoft/kb4338823.md) | Jul 19, 2018 |
| Microsoft | Windows 7 for 32-bit Systems Service Pack 1 |  | [KB4338818](https://patchblox.com/security/data/fix/microsoft/kb4338818.md) | Jul 10, 2018 |
| Microsoft | Windows 7 for 32-bit Systems Service Pack 1 |  | [KB4338821](https://patchblox.com/security/data/fix/microsoft/kb4338821.md) | Jul 10, 2018 |
| Microsoft | Windows 7 for 32-bit Systems Service Pack 1 |  | [KB4345459](https://patchblox.com/security/data/fix/microsoft/kb4345459.md) | Jul 10, 2018 |
| Microsoft | Windows 7 for x64-based Systems Service Pack 1 |  | [KB4338823](https://patchblox.com/security/data/fix/microsoft/kb4338823.md) | Jul 19, 2018 |
| Microsoft | Windows 7 for x64-based Systems Service Pack 1 |  | [KB4338818](https://patchblox.com/security/data/fix/microsoft/kb4338818.md) | Jul 10, 2018 |
| Microsoft | Windows 7 for x64-based Systems Service Pack 1 |  | [KB4338821](https://patchblox.com/security/data/fix/microsoft/kb4338821.md) | Jul 10, 2018 |
| Microsoft | Windows 7 for x64-based Systems Service Pack 1 |  | [KB4345459](https://patchblox.com/security/data/fix/microsoft/kb4345459.md) | Jul 10, 2018 |
| Microsoft | Windows 8.1 for 32-bit systems |  | [KB4338824](https://patchblox.com/security/data/fix/microsoft/kb4338824.md) | Jul 19, 2018 |
| Microsoft | Windows 8.1 for 32-bit systems |  | [KB4338815](https://patchblox.com/security/data/fix/microsoft/kb4338815.md) | Jul 10, 2018 |
| Microsoft | Windows 8.1 for 32-bit systems |  | [KB4338831](https://patchblox.com/security/data/fix/microsoft/kb4338831.md) | Jul 10, 2018 |
| Microsoft | Windows 8.1 for 32-bit systems |  | [KB4345424](https://patchblox.com/security/data/fix/microsoft/kb4345424.md) | Jul 10, 2018 |
| Microsoft | Windows 8.1 for x64-based systems |  | [KB4338824](https://patchblox.com/security/data/fix/microsoft/kb4338824.md) | Jul 19, 2018 |
| Microsoft | Windows 8.1 for x64-based systems |  | [KB4338815](https://patchblox.com/security/data/fix/microsoft/kb4338815.md) | Jul 10, 2018 |
| Microsoft | Windows 8.1 for x64-based systems |  | [KB4338831](https://patchblox.com/security/data/fix/microsoft/kb4338831.md) | Jul 10, 2018 |
| Microsoft | Windows 8.1 for x64-based systems |  | [KB4345424](https://patchblox.com/security/data/fix/microsoft/kb4345424.md) | Jul 10, 2018 |
| Microsoft | Windows RT 8.1 |  | [KB4338815](https://patchblox.com/security/data/fix/microsoft/kb4338815.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 |  | [KB4338823](https://patchblox.com/security/data/fix/microsoft/kb4338823.md) | Jul 19, 2018 |
| Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 |  | [KB4338818](https://patchblox.com/security/data/fix/microsoft/kb4338818.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 |  | [KB4338821](https://patchblox.com/security/data/fix/microsoft/kb4338821.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 |  | [KB4345459](https://patchblox.com/security/data/fix/microsoft/kb4345459.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB4338823](https://patchblox.com/security/data/fix/microsoft/kb4338823.md) | Jul 19, 2018 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB4338818](https://patchblox.com/security/data/fix/microsoft/kb4338818.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB4338821](https://patchblox.com/security/data/fix/microsoft/kb4338821.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB4345459](https://patchblox.com/security/data/fix/microsoft/kb4345459.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |  | [KB4338823](https://patchblox.com/security/data/fix/microsoft/kb4338823.md) | Jul 19, 2018 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |  | [KB4338818](https://patchblox.com/security/data/fix/microsoft/kb4338818.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |  | [KB4338821](https://patchblox.com/security/data/fix/microsoft/kb4338821.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |  | [KB4345459](https://patchblox.com/security/data/fix/microsoft/kb4345459.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 |  | [KB4339503](https://patchblox.com/security/data/fix/microsoft/kb4339503.md) | Jul 19, 2018 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) |  | [KB4339503](https://patchblox.com/security/data/fix/microsoft/kb4339503.md) | Jul 19, 2018 |
| Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 |  | [KB4339503](https://patchblox.com/security/data/fix/microsoft/kb4339503.md) | Jul 19, 2018 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 |  | [KB4339503](https://patchblox.com/security/data/fix/microsoft/kb4339503.md) | Jul 19, 2018 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) |  | [KB4339503](https://patchblox.com/security/data/fix/microsoft/kb4339503.md) | Jul 19, 2018 |
| Microsoft | Windows Server 2012 |  | [KB4338830](https://patchblox.com/security/data/fix/microsoft/kb4338830.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 |  | [KB4338816](https://patchblox.com/security/data/fix/microsoft/kb4338816.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 |  | [KB4345425](https://patchblox.com/security/data/fix/microsoft/kb4345425.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 (Server Core installation) |  | [KB4338830](https://patchblox.com/security/data/fix/microsoft/kb4338830.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 (Server Core installation) |  | [KB4338816](https://patchblox.com/security/data/fix/microsoft/kb4338816.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 (Server Core installation) |  | [KB4345425](https://patchblox.com/security/data/fix/microsoft/kb4345425.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 R2 |  | [KB4338824](https://patchblox.com/security/data/fix/microsoft/kb4338824.md) | Jul 19, 2018 |
| Microsoft | Windows Server 2012 R2 |  | [KB4338815](https://patchblox.com/security/data/fix/microsoft/kb4338815.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 R2 |  | [KB4338831](https://patchblox.com/security/data/fix/microsoft/kb4338831.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 R2 |  | [KB4345424](https://patchblox.com/security/data/fix/microsoft/kb4345424.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB4338824](https://patchblox.com/security/data/fix/microsoft/kb4338824.md) | Jul 19, 2018 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB4338815](https://patchblox.com/security/data/fix/microsoft/kb4338815.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB4338831](https://patchblox.com/security/data/fix/microsoft/kb4338831.md) | Jul 10, 2018 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB4345424](https://patchblox.com/security/data/fix/microsoft/kb4345424.md) | Jul 10, 2018 |

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Data as of 2026-11-07T12:40:37Z 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