# CVE-2018-8423: Microsoft JET Database Engine Remote Code Execution Vulnerability CVE-2018-8423 is fixed in 35 products on 1 platform, first by KB4462917, released October 9, 2018. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2018-8423 - Priority: High - CVSS: 7.8 (Important) - EPSS: 0.3215 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: yes - Vendor exploitability assessment: Exploitation Less Likely - Published: Oct 9, 2018 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8423 ## Description

A remote code execution vulnerability exists in the Microsoft JET Database Engine.

An attacker who successfully exploited this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

To exploit the vulnerability, a user must open/import a specially crafted Microsoft JET Database Engine file. In an email attack scenario, an attacker could exploit the vulnerability by sending a specially crafted file to the user, and then convince the user to open the file.

The security update addresses the vulnerability by modifying how the Microsoft JET Database Engine handles objects in memory.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.2551 | [KB4462917](https://patchblox.com/security/data/fix/microsoft/kb4462917.md) | Oct 9, 2018 | | Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.2551 | [KB4462917](https://patchblox.com/security/data/fix/microsoft/kb4462917.md) | Oct 9, 2018 | | Microsoft | Windows 10 Version 1703 for 32-bit Systems | 15063.1387 | [KB4462937](https://patchblox.com/security/data/fix/microsoft/kb4462937.md) | Oct 9, 2018 | | Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.1387 | [KB4462937](https://patchblox.com/security/data/fix/microsoft/kb4462937.md) | Oct 9, 2018 | | Microsoft | Windows 10 Version 1709 for 32-bit Systems | 16299.726 | [KB4462918](https://patchblox.com/security/data/fix/microsoft/kb4462918.md) | Oct 9, 2018 | | Microsoft | Windows 10 Version 1709 for x64-based Systems | 16299.726 | [KB4462918](https://patchblox.com/security/data/fix/microsoft/kb4462918.md) | Oct 9, 2018 | | Microsoft | Windows 10 Version 1803 for 32-bit Systems | 17134.345 | [KB4462919](https://patchblox.com/security/data/fix/microsoft/kb4462919.md) | Oct 9, 2018 | | Microsoft | Windows 10 Version 1803 for x64-based Systems | 17134.345 | [KB4462919](https://patchblox.com/security/data/fix/microsoft/kb4462919.md) | Oct 9, 2018 | | Microsoft | Windows 10 Version 1809 for 32-bit Systems | 17763.55 | [KB4464330](https://patchblox.com/security/data/fix/microsoft/kb4464330.md) | Oct 9, 2018 | | Microsoft | Windows 10 Version 1809 for x64-based Systems | 17763.55 | [KB4464330](https://patchblox.com/security/data/fix/microsoft/kb4464330.md) | Oct 9, 2018 | | Microsoft | Windows 10 for 32-bit Systems | 10240.18005 | [KB4462922](https://patchblox.com/security/data/fix/microsoft/kb4462922.md) | Oct 9, 2018 | | Microsoft | Windows 10 for x64-based Systems | 10240.18005 | [KB4462922](https://patchblox.com/security/data/fix/microsoft/kb4462922.md) | Oct 9, 2018 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4462915](https://patchblox.com/security/data/fix/microsoft/kb4462915.md) | Oct 9, 2018 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4462923](https://patchblox.com/security/data/fix/microsoft/kb4462923.md) | Oct 9, 2018 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4462915](https://patchblox.com/security/data/fix/microsoft/kb4462915.md) | Oct 9, 2018 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4462923](https://patchblox.com/security/data/fix/microsoft/kb4462923.md) | Oct 9, 2018 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4462941](https://patchblox.com/security/data/fix/microsoft/kb4462941.md) | Oct 9, 2018 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4462926](https://patchblox.com/security/data/fix/microsoft/kb4462926.md) | Oct 9, 2018 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4462941](https://patchblox.com/security/data/fix/microsoft/kb4462941.md) | Oct 9, 2018 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4462926](https://patchblox.com/security/data/fix/microsoft/kb4462926.md) | Oct 9, 2018 | | Microsoft | Windows RT 8.1 | | [KB4462926](https://patchblox.com/security/data/fix/microsoft/kb4462926.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4462915](https://patchblox.com/security/data/fix/microsoft/kb4462915.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4462923](https://patchblox.com/security/data/fix/microsoft/kb4462923.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4462915](https://patchblox.com/security/data/fix/microsoft/kb4462915.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4462923](https://patchblox.com/security/data/fix/microsoft/kb4462923.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4462915](https://patchblox.com/security/data/fix/microsoft/kb4462915.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4462923](https://patchblox.com/security/data/fix/microsoft/kb4462923.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4463097](https://patchblox.com/security/data/fix/microsoft/kb4463097.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4463104](https://patchblox.com/security/data/fix/microsoft/kb4463104.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB4463097](https://patchblox.com/security/data/fix/microsoft/kb4463097.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB4463104](https://patchblox.com/security/data/fix/microsoft/kb4463104.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4463097](https://patchblox.com/security/data/fix/microsoft/kb4463097.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4463104](https://patchblox.com/security/data/fix/microsoft/kb4463104.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4463097](https://patchblox.com/security/data/fix/microsoft/kb4463097.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4463104](https://patchblox.com/security/data/fix/microsoft/kb4463104.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB4463097](https://patchblox.com/security/data/fix/microsoft/kb4463097.md) | Oct 9, 2018 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB4463104](https://patchblox.com/security/data/fix/microsoft/kb4463104.md) | Oct 9, 2018 | | Microsoft | Windows Server 2012 | | [KB4462931](https://patchblox.com/security/data/fix/microsoft/kb4462931.md) | Oct 9, 2018 | | Microsoft | Windows Server 2012 | | [KB4462929](https://patchblox.com/security/data/fix/microsoft/kb4462929.md) | Oct 9, 2018 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4462931](https://patchblox.com/security/data/fix/microsoft/kb4462931.md) | Oct 9, 2018 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4462929](https://patchblox.com/security/data/fix/microsoft/kb4462929.md) | Oct 9, 2018 | | Microsoft | Windows Server 2012 R2 | | [KB4462941](https://patchblox.com/security/data/fix/microsoft/kb4462941.md) | Oct 9, 2018 | | Microsoft | Windows Server 2012 R2 | | [KB4462926](https://patchblox.com/security/data/fix/microsoft/kb4462926.md) | Oct 9, 2018 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4462941](https://patchblox.com/security/data/fix/microsoft/kb4462941.md) | Oct 9, 2018 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4462926](https://patchblox.com/security/data/fix/microsoft/kb4462926.md) | Oct 9, 2018 | | Microsoft | Windows Server 2016 | 14393.2551 | [KB4462917](https://patchblox.com/security/data/fix/microsoft/kb4462917.md) | Oct 9, 2018 | | Microsoft | Windows Server 2016 (Server Core installation) | 14393.2551 | [KB4462917](https://patchblox.com/security/data/fix/microsoft/kb4462917.md) | Oct 9, 2018 | | Microsoft | Windows Server 2019 | 17763.55 | [KB4464330](https://patchblox.com/security/data/fix/microsoft/kb4464330.md) | Oct 9, 2018 | | Microsoft | Windows Server 2019 (Server Core installation) | 17763.55 | [KB4464330](https://patchblox.com/security/data/fix/microsoft/kb4464330.md) | Oct 9, 2018 | | Microsoft | Windows Server, version 1709 (Server Core Installation) | 16299.726 | [KB4462918](https://patchblox.com/security/data/fix/microsoft/kb4462918.md) | Oct 9, 2018 | | Microsoft | Windows Server, version 1803 (Server Core Installation) | 17134.345 | [KB4462919](https://patchblox.com/security/data/fix/microsoft/kb4462919.md) | Oct 9, 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