# CVE-2018-0890: Active Directory Security Feature Bypass Vulnerability

CVE-2018-0890 is fixed in 9 products on 1 platform, first by KB4093119, released April 10, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-0890
- Priority: Routine
- CVSS: 5.3 (Important)
- EPSS: 0.0422
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: N/A
- Published: Apr 10, 2018
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-0890

## Description

<p>A security feature bypass vulnerability exists when Active Directory incorrectly applies Network Isolation settings. To exploit this vulnerability, an attacker could run a specially crafted application.</p> <p>An attacker who successfully exploited this vulnerability could bypass firewall policies applied to Modern Applications.</p> <p>This update corrects the security feature’s behavior by correcting how Active Directory manages Network Isolation policies applied to Modern Applications.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.2189 | [KB4093119](https://patchblox.com/security/data/fix/microsoft/kb4093119.md) | Apr 10, 2018 |
| Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.2189 | [KB4093119](https://patchblox.com/security/data/fix/microsoft/kb4093119.md) | Apr 10, 2018 |
| Microsoft | Windows 10 Version 1703 for 32-bit Systems | 15063.1029 | [KB4093107](https://patchblox.com/security/data/fix/microsoft/kb4093107.md) | Apr 10, 2018 |
| Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.1029 | [KB4093107](https://patchblox.com/security/data/fix/microsoft/kb4093107.md) | Apr 10, 2018 |
| Microsoft | Windows 10 Version 1709 for 32-bit Systems | 16299.371 | [KB4093112](https://patchblox.com/security/data/fix/microsoft/kb4093112.md) | Apr 10, 2018 |
| Microsoft | Windows 10 Version 1709 for x64-based Systems | 16299.371 | [KB4093112](https://patchblox.com/security/data/fix/microsoft/kb4093112.md) | Apr 10, 2018 |
| Microsoft | Windows Server 2016 | 14393.2189 | [KB4093119](https://patchblox.com/security/data/fix/microsoft/kb4093119.md) | Apr 10, 2018 |
| Microsoft | Windows Server 2016 (Server Core installation) | 14393.2189 | [KB4093119](https://patchblox.com/security/data/fix/microsoft/kb4093119.md) | Apr 10, 2018 |
| Microsoft | Windows Server, version 1709  (Server Core Installation) | 16299.371 | [KB4093112](https://patchblox.com/security/data/fix/microsoft/kb4093112.md) | Apr 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