# CVE-2018-8256: Microsoft PowerShell Remote Code Execution Vulnerability CVE-2018-8256 is fixed in 33 products on 1 platform, first by KB4467691, released November 13, 2018. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2018-8256 - Priority: Routine - CVSS: 6.3 (Important) - EPSS: 0.2264 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Less Likely - Published: Nov 13, 2018 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8256 ## Description

A remote code execution vulnerability exists when PowerShell improperly handles specially crafted files. An attacker who successfully exploited this vulnerability could execute malicious code on a vulnerable system.

To exploit the vulnerability, an attacker must send a specially crafted file to a vulnerable system.

The security update fixes the vulnerability by ensuring PowerShell properly handles files.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.2608 | [KB4467691](https://patchblox.com/security/data/fix/microsoft/kb4467691.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.2608 | [KB4467691](https://patchblox.com/security/data/fix/microsoft/kb4467691.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1703 for 32-bit Systems | 15063.1446 | [KB4467696](https://patchblox.com/security/data/fix/microsoft/kb4467696.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.1446 | [KB4467696](https://patchblox.com/security/data/fix/microsoft/kb4467696.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1709 for 32-bit Systems | 16299.785 | [KB4467686](https://patchblox.com/security/data/fix/microsoft/kb4467686.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1709 for ARM64-based Systems | 16299.785 | [KB4467686](https://patchblox.com/security/data/fix/microsoft/kb4467686.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1709 for x64-based Systems | 16299.785 | [KB4467686](https://patchblox.com/security/data/fix/microsoft/kb4467686.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1803 for 32-bit Systems | 17134.407 | [KB4467702](https://patchblox.com/security/data/fix/microsoft/kb4467702.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1803 for ARM64-based Systems | 17134.407 | [KB4467702](https://patchblox.com/security/data/fix/microsoft/kb4467702.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1803 for x64-based Systems | 17134.407 | [KB4467702](https://patchblox.com/security/data/fix/microsoft/kb4467702.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1809 for 32-bit Systems | 17763.134 | [KB4467708](https://patchblox.com/security/data/fix/microsoft/kb4467708.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1809 for ARM64-based Systems | 17763.134 | [KB4467708](https://patchblox.com/security/data/fix/microsoft/kb4467708.md) | Nov 13, 2018 | | Microsoft | Windows 10 Version 1809 for x64-based Systems | 17763.134 | [KB4467708](https://patchblox.com/security/data/fix/microsoft/kb4467708.md) | Nov 13, 2018 | | Microsoft | Windows 10 for 32-bit Systems | 10240.18036 | [KB4467680](https://patchblox.com/security/data/fix/microsoft/kb4467680.md) | Nov 13, 2018 | | Microsoft | Windows 10 for x64-based Systems | 10240.18036 | [KB4467680](https://patchblox.com/security/data/fix/microsoft/kb4467680.md) | Nov 13, 2018 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4467107](https://patchblox.com/security/data/fix/microsoft/kb4467107.md) | Nov 13, 2018 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4467106](https://patchblox.com/security/data/fix/microsoft/kb4467106.md) | Nov 13, 2018 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4467107](https://patchblox.com/security/data/fix/microsoft/kb4467107.md) | Nov 13, 2018 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4467106](https://patchblox.com/security/data/fix/microsoft/kb4467106.md) | Nov 13, 2018 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4467703](https://patchblox.com/security/data/fix/microsoft/kb4467703.md) | Nov 13, 2018 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4467697](https://patchblox.com/security/data/fix/microsoft/kb4467697.md) | Nov 13, 2018 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4467703](https://patchblox.com/security/data/fix/microsoft/kb4467703.md) | Nov 13, 2018 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4467697](https://patchblox.com/security/data/fix/microsoft/kb4467697.md) | Nov 13, 2018 | | Microsoft | Windows RT 8.1 | | [KB4467697](https://patchblox.com/security/data/fix/microsoft/kb4467697.md) | Nov 13, 2018 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4467107](https://patchblox.com/security/data/fix/microsoft/kb4467107.md) | Nov 13, 2018 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4467106](https://patchblox.com/security/data/fix/microsoft/kb4467106.md) | Nov 13, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4467107](https://patchblox.com/security/data/fix/microsoft/kb4467107.md) | Nov 13, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4467106](https://patchblox.com/security/data/fix/microsoft/kb4467106.md) | Nov 13, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4467107](https://patchblox.com/security/data/fix/microsoft/kb4467107.md) | Nov 13, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4467106](https://patchblox.com/security/data/fix/microsoft/kb4467106.md) | Nov 13, 2018 | | Microsoft | Windows Server 2012 | | [KB4467701](https://patchblox.com/security/data/fix/microsoft/kb4467701.md) | Nov 13, 2018 | | Microsoft | Windows Server 2012 | | [KB4467678](https://patchblox.com/security/data/fix/microsoft/kb4467678.md) | Nov 13, 2018 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4467701](https://patchblox.com/security/data/fix/microsoft/kb4467701.md) | Nov 13, 2018 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4467678](https://patchblox.com/security/data/fix/microsoft/kb4467678.md) | Nov 13, 2018 | | Microsoft | Windows Server 2012 R2 | | [KB4467703](https://patchblox.com/security/data/fix/microsoft/kb4467703.md) | Nov 13, 2018 | | Microsoft | Windows Server 2012 R2 | | [KB4467697](https://patchblox.com/security/data/fix/microsoft/kb4467697.md) | Nov 13, 2018 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4467703](https://patchblox.com/security/data/fix/microsoft/kb4467703.md) | Nov 13, 2018 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4467697](https://patchblox.com/security/data/fix/microsoft/kb4467697.md) | Nov 13, 2018 | | Microsoft | Windows Server 2016 | 14393.2608 | [KB4467691](https://patchblox.com/security/data/fix/microsoft/kb4467691.md) | Nov 13, 2018 | | Microsoft | Windows Server 2016 (Server Core installation) | 14393.2608 | [KB4467691](https://patchblox.com/security/data/fix/microsoft/kb4467691.md) | Nov 13, 2018 | | Microsoft | Windows Server 2019 | 17763.134 | [KB4467708](https://patchblox.com/security/data/fix/microsoft/kb4467708.md) | Nov 13, 2018 | | Microsoft | Windows Server 2019 (Server Core installation) | 17763.134 | [KB4467708](https://patchblox.com/security/data/fix/microsoft/kb4467708.md) | Nov 13, 2018 | | Microsoft | Windows Server, version 1709 (Server Core Installation) | 16299.785 | [KB4467686](https://patchblox.com/security/data/fix/microsoft/kb4467686.md) | Nov 13, 2018 | | Microsoft | Windows Server, version 1803 (Server Core Installation) | 17134.407 | [KB4467702](https://patchblox.com/security/data/fix/microsoft/kb4467702.md) | Nov 13, 2018 | --- 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