# KB4343900: August 2018 security update KB4343900, released August 14, 2018, fixes 24 CVEs across 8 products. One of them is being exploited (CVE-2018-8373); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported. - Web page: https://patchblox.com/security/fix/microsoft/kb4343900 - Platform: Microsoft - Released: Aug 14, 2018 - Priority: Patch now (Closes CVE-2018-8373, exploited (CISA KEV)) - CVEs: 24, exploited: 1, on CISA KEV: 1 - Vendor advisory: https://support.microsoft.com/help/4343900 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-7-for-32-bit-systems-service-pack-1.md) | | | | [Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-7-for-x64-based-systems-service-pack-1.md) | | | | [Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-server-2008-r2-for-x64-based-systems-service-pack-1.md) | | | | [Windows 7 for 32-bit Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/windows-7-for-32-bit-systems-service-pack-1.md) | | | | [Windows 7 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/windows-7-for-x64-based-systems-service-pack-1.md) | | | | [Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/windows-server-2008-r2-for-itanium-based-systems-service-pack-1.md) | | | | [Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1.md) | | | | [Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1-server-core-installation.md) | | | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2018-8373](https://patchblox.com/security/data/cve/CVE-2018-8373.md) | Patch now | Microsoft Scripting Engine | 6.4 | 0.6177 | CISA KEV, Disclosed | | [CVE-2018-8355](https://patchblox.com/security/data/cve/CVE-2018-8355.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.6790 | More likely | | [CVE-2018-8397](https://patchblox.com/security/data/cve/CVE-2018-8397.md) | Urgent | Microsoft Graphics Component | 8.8 | 0.6752 | | | [CVE-2018-8353](https://patchblox.com/security/data/cve/CVE-2018-8353.md) | Urgent | Microsoft Scripting Engine | 6.4 | 0.6734 | More likely | | [CVE-2018-8389](https://patchblox.com/security/data/cve/CVE-2018-8389.md) | Urgent | Microsoft Scripting Engine | 6.4 | 0.3035 | More likely | | [CVE-2018-8372](https://patchblox.com/security/data/cve/CVE-2018-8372.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.2628 | More likely | | [CVE-2018-8344](https://patchblox.com/security/data/cve/CVE-2018-8344.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.2298 | More likely | | [CVE-2018-8371](https://patchblox.com/security/data/cve/CVE-2018-8371.md) | Urgent | Microsoft Scripting Engine | 6.4 | 0.1538 | More likely | | [CVE-2018-8385](https://patchblox.com/security/data/cve/CVE-2018-8385.md) | Urgent | Microsoft Scripting Engine | 7.5 | 0.1517 | More likely | | [CVE-2018-8345](https://patchblox.com/security/data/cve/CVE-2018-8345.md) | Urgent | Microsoft Windows | 7.5 | 0.1490 | More likely | | [CVE-2018-8403](https://patchblox.com/security/data/cve/CVE-2018-8403.md) | Urgent | Microsoft Browsers | 4.2 | 0.1337 | More likely | | [CVE-2018-8404](https://patchblox.com/security/data/cve/CVE-2018-8404.md) | Urgent | Windows Kernel | 7.0 | 0.0122 | More likely | | [CVE-2018-8349](https://patchblox.com/security/data/cve/CVE-2018-8349.md) | High | Windows COM | 7.0 | 0.2340 | | | [CVE-2018-8346](https://patchblox.com/security/data/cve/CVE-2018-8346.md) | High | Microsoft Windows | 7.5 | 0.1997 | | | [CVE-2018-8342](https://patchblox.com/security/data/cve/CVE-2018-8342.md) | High | Windows RNDIS | 7.0 | 0.0129 | | | [CVE-2018-8343](https://patchblox.com/security/data/cve/CVE-2018-8343.md) | High | Windows NDIS | 7.0 | 0.0129 | | | [CVE-2018-8339](https://patchblox.com/security/data/cve/CVE-2018-8339.md) | High | Windows Installer | 7.4 | 0.0116 | | | [CVE-2018-8316](https://patchblox.com/security/data/cve/CVE-2018-8316.md) | Routine | Internet Explorer | 6.4 | 0.1450 | | | [CVE-2018-8394](https://patchblox.com/security/data/cve/CVE-2018-8394.md) | Routine | Microsoft Graphics Component | 4.7 | 0.0851 | | | [CVE-2018-8398](https://patchblox.com/security/data/cve/CVE-2018-8398.md) | Routine | Microsoft Graphics Component | 4.7 | 0.0851 | | | [CVE-2018-8351](https://patchblox.com/security/data/cve/CVE-2018-8351.md) | Routine | Microsoft Browsers | 4.2 | 0.0839 | | | [CVE-2018-8341](https://patchblox.com/security/data/cve/CVE-2018-8341.md) | Routine | Windows Kernel | 4.7 | 0.0285 | | | [CVE-2018-8396](https://patchblox.com/security/data/cve/CVE-2018-8396.md) | Routine | Microsoft Graphics Component | 4.7 | 0.0264 | | | [CVE-2018-8348](https://patchblox.com/security/data/cve/CVE-2018-8348.md) | Routine | Windows Kernel | 4.7 | 0.0235 | | --- 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