# KB4489873: March 2019 security update

KB4489873, released March 12, 2019, fixes 11 CVEs across 9 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb4489873
- Platform: Microsoft
- Released: Mar 12, 2019
- Priority: Urgent (Closes CVE-2019-0667, exploitation more likely)
- CVEs: 11, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4489873

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Internet Explorer 10 on Windows Server 2012](https://patchblox.com/security/data/product/microsoft/internet-explorer-10-on-windows-server-2012.md) |  |  |
| [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 8.1 for 32-bit systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-8.1-for-32-bit-systems.md) |  |  |
| [Internet Explorer 11 on Windows 8.1 for x64-based systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-8.1-for-x64-based-systems.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) |  |  |
| [Internet Explorer 11 on Windows Server 2012 R2](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-server-2012-r2.md) |  |  |
| [Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/internet-explorer-9-on-windows-server-2008-for-32-bit-systems-service-pack-2.md) |  |  |
| [Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/internet-explorer-9-on-windows-server-2008-for-x64-based-systems-service-pack-2.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2019-0667](https://patchblox.com/security/data/cve/CVE-2019-0667.md) | Urgent | Microsoft Scripting Engine | 7.5 | 0.3126 | More likely |
| [CVE-2019-0666](https://patchblox.com/security/data/cve/CVE-2019-0666.md) | Urgent | Microsoft Scripting Engine | 7.5 | 0.1989 | More likely |
| [CVE-2019-0609](https://patchblox.com/security/data/cve/CVE-2019-0609.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.0985 | More likely |
| [CVE-2019-0665](https://patchblox.com/security/data/cve/CVE-2019-0665.md) | Urgent | Microsoft Scripting Engine | 7.5 | 0.0826 | More likely |
| [CVE-2019-0680](https://patchblox.com/security/data/cve/CVE-2019-0680.md) | Urgent | Microsoft Scripting Engine | 7.5 | 0.0810 | More likely |
| [CVE-2019-0763](https://patchblox.com/security/data/cve/CVE-2019-0763.md) | Urgent | Internet Explorer | 6.4 | 0.0810 | More likely |
| [CVE-2019-0783](https://patchblox.com/security/data/cve/CVE-2019-0783.md) | Urgent | Microsoft Scripting Engine | 6.4 | 0.0810 | More likely |
| [CVE-2019-0780](https://patchblox.com/security/data/cve/CVE-2019-0780.md) | Urgent | Microsoft Browsers | 4.2 | 0.0799 | More likely |
| [CVE-2019-0746](https://patchblox.com/security/data/cve/CVE-2019-0746.md) | Routine | Microsoft Scripting Engine | 4.2 | 0.0655 |  |
| [CVE-2019-0762](https://patchblox.com/security/data/cve/CVE-2019-0762.md) | Routine | Microsoft Browsers | 4.3 | 0.0450 |  |
| [CVE-2019-0761](https://patchblox.com/security/data/cve/CVE-2019-0761.md) | Routine | Internet Explorer | n/a | 0.0385 |  |

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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