# CVE-2017-11818: Windows Storage Security Feature Bypass Vulnerability

CVE-2017-11818 is fixed in 17 products on 1 platform, first by KB4041689, released October 10, 2017. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2017-11818
- Priority: Routine
- CVSS: 4.5 (Important)
- EPSS: 0.0117
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Oct 10, 2017
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-11818

## Description

<p>An Security Feature bypass vulnerability exists in Microsoft Windows storage when it fails to validate an integrity-level check.</p> <p>An attacker who successfully exploited the vulnerability could allow an application with a certain integrity level to execute code at a different integrity level.</p> <p>The update addresses the vulnerability by correcting how Microsoft storage validates an integrity-level check.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1511 for 32-bit Systems | 10586.1176 | [KB4041689](https://patchblox.com/security/data/fix/microsoft/kb4041689.md) | Oct 10, 2017 |
| Microsoft | Windows 10 Version 1511 for x64-based Systems | 10586.1176 | [KB4041689](https://patchblox.com/security/data/fix/microsoft/kb4041689.md) | Oct 10, 2017 |
| Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.1770 | [KB4041691](https://patchblox.com/security/data/fix/microsoft/kb4041691.md) | Oct 10, 2017 |
| Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.1770 | [KB4041691](https://patchblox.com/security/data/fix/microsoft/kb4041691.md) | Oct 10, 2017 |
| Microsoft | Windows 10 Version 1703 for 32-bit Systems | 15063.674 | [KB4041676](https://patchblox.com/security/data/fix/microsoft/kb4041676.md) | Oct 10, 2017 |
| Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.674 | [KB4041676](https://patchblox.com/security/data/fix/microsoft/kb4041676.md) | Oct 10, 2017 |
| Microsoft | Windows 10 for 32-bit Systems | 10240.17643 | [KB4042895](https://patchblox.com/security/data/fix/microsoft/kb4042895.md) | Oct 10, 2017 |
| Microsoft | Windows 10 for x64-based Systems | 10240.17643 | [KB4042895](https://patchblox.com/security/data/fix/microsoft/kb4042895.md) | Oct 10, 2017 |
| Microsoft | Windows 8.1 for 32-bit systems |  | [KB4041693](https://patchblox.com/security/data/fix/microsoft/kb4041693.md) | Oct 10, 2017 |
| Microsoft | Windows 8.1 for 32-bit systems |  | [KB4041687](https://patchblox.com/security/data/fix/microsoft/kb4041687.md) | Oct 10, 2017 |
| Microsoft | Windows 8.1 for x64-based systems |  | [KB4041693](https://patchblox.com/security/data/fix/microsoft/kb4041693.md) | Oct 10, 2017 |
| Microsoft | Windows 8.1 for x64-based systems |  | [KB4041687](https://patchblox.com/security/data/fix/microsoft/kb4041687.md) | Oct 10, 2017 |
| Microsoft | Windows RT 8.1 |  | [KB4041693](https://patchblox.com/security/data/fix/microsoft/kb4041693.md) | Oct 10, 2017 |
| Microsoft | Windows Server 2012 |  | [KB4041690](https://patchblox.com/security/data/fix/microsoft/kb4041690.md) | Oct 10, 2017 |
| Microsoft | Windows Server 2012 |  | [KB4041679](https://patchblox.com/security/data/fix/microsoft/kb4041679.md) | Oct 10, 2017 |
| Microsoft | Windows Server 2012 (Server Core installation) |  | [KB4041690](https://patchblox.com/security/data/fix/microsoft/kb4041690.md) | Oct 10, 2017 |
| Microsoft | Windows Server 2012 (Server Core installation) |  | [KB4041679](https://patchblox.com/security/data/fix/microsoft/kb4041679.md) | Oct 10, 2017 |
| Microsoft | Windows Server 2012 R2 |  | [KB4041693](https://patchblox.com/security/data/fix/microsoft/kb4041693.md) | Oct 10, 2017 |
| Microsoft | Windows Server 2012 R2 |  | [KB4041687](https://patchblox.com/security/data/fix/microsoft/kb4041687.md) | Oct 10, 2017 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB4041693](https://patchblox.com/security/data/fix/microsoft/kb4041693.md) | Oct 10, 2017 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |  | [KB4041687](https://patchblox.com/security/data/fix/microsoft/kb4041687.md) | Oct 10, 2017 |
| Microsoft | Windows Server 2016 | 14393.1770 | [KB4041691](https://patchblox.com/security/data/fix/microsoft/kb4041691.md) | Oct 10, 2017 |
| Microsoft | Windows Server 2016 (Server Core installation) | 14393.1770 | [KB4041691](https://patchblox.com/security/data/fix/microsoft/kb4041691.md) | Oct 10, 2017 |

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