# CVE-2018-8167: Windows Common Log File System Driver Elevation of Privilege Vulnerability CVE-2018-8167 is fixed in 31 products on 1 platform, first by KB4103723, released May 8, 2018. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/cve/CVE-2018-8167 - Priority: Urgent - CVSS: 7.0 (Important) - EPSS: 0.0102 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation More Likely - Published: May 8, 2018 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8167 ## Description

An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context.

To exploit the vulnerability, an attacker would first have to log on to the system, and then run a specially crafted application to take control over the affected system.

The security update addresses the vulnerability by correcting how CLFS handles objects in memory.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.2248 | [KB4103723](https://patchblox.com/security/data/fix/microsoft/kb4103723.md) | May 8, 2018 | | Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.2248 | [KB4103723](https://patchblox.com/security/data/fix/microsoft/kb4103723.md) | May 8, 2018 | | Microsoft | Windows 10 Version 1703 for 32-bit Systems | 15063.1088 | [KB4103731](https://patchblox.com/security/data/fix/microsoft/kb4103731.md) | May 8, 2018 | | Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.1088 | [KB4103731](https://patchblox.com/security/data/fix/microsoft/kb4103731.md) | May 8, 2018 | | Microsoft | Windows 10 Version 1709 for 32-bit Systems | 16299.431 | [KB4103727](https://patchblox.com/security/data/fix/microsoft/kb4103727.md) | May 8, 2018 | | Microsoft | Windows 10 Version 1709 for x64-based Systems | 16299.431 | [KB4103727](https://patchblox.com/security/data/fix/microsoft/kb4103727.md) | May 8, 2018 | | Microsoft | Windows 10 Version 1803 for 32-bit Systems | 17134.48 | [KB4103721](https://patchblox.com/security/data/fix/microsoft/kb4103721.md) | May 8, 2018 | | Microsoft | Windows 10 Version 1803 for x64-based Systems | 17134.48 | [KB4103721](https://patchblox.com/security/data/fix/microsoft/kb4103721.md) | May 8, 2018 | | Microsoft | Windows 10 for 32-bit Systems | 10240.17861 | [KB4103716](https://patchblox.com/security/data/fix/microsoft/kb4103716.md) | May 8, 2018 | | Microsoft | Windows 10 for x64-based Systems | 10240.17861 | [KB4103716](https://patchblox.com/security/data/fix/microsoft/kb4103716.md) | May 8, 2018 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4103718](https://patchblox.com/security/data/fix/microsoft/kb4103718.md) | May 8, 2018 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4103712](https://patchblox.com/security/data/fix/microsoft/kb4103712.md) | May 8, 2018 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4103718](https://patchblox.com/security/data/fix/microsoft/kb4103718.md) | May 8, 2018 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4103712](https://patchblox.com/security/data/fix/microsoft/kb4103712.md) | May 8, 2018 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4103725](https://patchblox.com/security/data/fix/microsoft/kb4103725.md) | May 8, 2018 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4103715](https://patchblox.com/security/data/fix/microsoft/kb4103715.md) | May 8, 2018 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4103725](https://patchblox.com/security/data/fix/microsoft/kb4103725.md) | May 8, 2018 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4103715](https://patchblox.com/security/data/fix/microsoft/kb4103715.md) | May 8, 2018 | | Microsoft | Windows RT 8.1 | | [KB4103725](https://patchblox.com/security/data/fix/microsoft/kb4103725.md) | May 8, 2018 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4103718](https://patchblox.com/security/data/fix/microsoft/kb4103718.md) | May 8, 2018 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4103712](https://patchblox.com/security/data/fix/microsoft/kb4103712.md) | May 8, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4103718](https://patchblox.com/security/data/fix/microsoft/kb4103718.md) | May 8, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4103712](https://patchblox.com/security/data/fix/microsoft/kb4103712.md) | May 8, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4103718](https://patchblox.com/security/data/fix/microsoft/kb4103718.md) | May 8, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4103712](https://patchblox.com/security/data/fix/microsoft/kb4103712.md) | May 8, 2018 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4130944](https://patchblox.com/security/data/fix/microsoft/kb4130944.md) | May 8, 2018 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB4130944](https://patchblox.com/security/data/fix/microsoft/kb4130944.md) | May 8, 2018 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4130944](https://patchblox.com/security/data/fix/microsoft/kb4130944.md) | May 8, 2018 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4130944](https://patchblox.com/security/data/fix/microsoft/kb4130944.md) | May 8, 2018 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB4130944](https://patchblox.com/security/data/fix/microsoft/kb4130944.md) | May 8, 2018 | | Microsoft | Windows Server 2012 | | [KB4103730](https://patchblox.com/security/data/fix/microsoft/kb4103730.md) | May 8, 2018 | | Microsoft | Windows Server 2012 | | [KB4103726](https://patchblox.com/security/data/fix/microsoft/kb4103726.md) | May 8, 2018 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4103730](https://patchblox.com/security/data/fix/microsoft/kb4103730.md) | May 8, 2018 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4103726](https://patchblox.com/security/data/fix/microsoft/kb4103726.md) | May 8, 2018 | | Microsoft | Windows Server 2012 R2 | | [KB4103725](https://patchblox.com/security/data/fix/microsoft/kb4103725.md) | May 8, 2018 | | Microsoft | Windows Server 2012 R2 | | [KB4103715](https://patchblox.com/security/data/fix/microsoft/kb4103715.md) | May 8, 2018 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4103725](https://patchblox.com/security/data/fix/microsoft/kb4103725.md) | May 8, 2018 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4103715](https://patchblox.com/security/data/fix/microsoft/kb4103715.md) | May 8, 2018 | | Microsoft | Windows Server 2016 | 14393.2248 | [KB4103723](https://patchblox.com/security/data/fix/microsoft/kb4103723.md) | May 8, 2018 | | Microsoft | Windows Server 2016 (Server Core installation) | 14393.2248 | [KB4103723](https://patchblox.com/security/data/fix/microsoft/kb4103723.md) | May 8, 2018 | | Microsoft | Windows Server, version 1709 (Server Core Installation) | 16299.431 | [KB4103727](https://patchblox.com/security/data/fix/microsoft/kb4103727.md) | May 8, 2018 | | Microsoft | Windows Server, version 1803 (Server Core Installation) | 17134.48 | [KB4103721](https://patchblox.com/security/data/fix/microsoft/kb4103721.md) | May 8, 2018 | --- Data as of 2026-11-07T06:34:28Z 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