# KB4530730: December 2019 security update

KB4530730, released December 10, 2019, fixes 10 CVEs across 4 products. One of them is being exploited (CVE-2019-1458); 1 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/microsoft/kb4530730
- Platform: Microsoft
- Released: Dec 10, 2019
- Priority: Patch now (Closes CVE-2019-1458, exploited (CISA KEV, ransomware))
- CVEs: 10, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://support.microsoft.com/help/4530730

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 8.1 for 32-bit systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-32-bit-systems.md) |  |  |
| [Windows 8.1 for x64-based systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-x64-based-systems.md) |  |  |
| [Windows Server 2012 R2](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2.md) |  |  |
| [Windows Server 2012 R2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2019-1458](https://patchblox.com/security/data/cve/CVE-2019-1458.md) | Patch now | Windows Kernel | 7.8 | 0.7444 | CISA KEV, Ransomware |
| [CVE-2019-1468](https://patchblox.com/security/data/cve/CVE-2019-1468.md) | Urgent | Microsoft Graphics Component | 8.4 | 0.1768 |  |
| [CVE-2019-1453](https://patchblox.com/security/data/cve/CVE-2019-1453.md) | High | Microsoft Windows | 7.5 | 0.0975 |  |
| [CVE-2019-1484](https://patchblox.com/security/data/cve/CVE-2019-1484.md) | High | Windows OLE | 7.8 | 0.0948 |  |
| [CVE-2019-1470](https://patchblox.com/security/data/cve/CVE-2019-1470.md) | Routine | Windows Hyper-V | 6.0 | 0.0667 |  |
| [CVE-2019-1465](https://patchblox.com/security/data/cve/CVE-2019-1465.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0602 |  |
| [CVE-2019-1466](https://patchblox.com/security/data/cve/CVE-2019-1466.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0602 |  |
| [CVE-2019-1467](https://patchblox.com/security/data/cve/CVE-2019-1467.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0601 |  |
| [CVE-2019-1474](https://patchblox.com/security/data/cve/CVE-2019-1474.md) | Routine | Microsoft Windows | 5.5 | 0.0156 |  |
| [CVE-2019-1488](https://patchblox.com/security/data/cve/CVE-2019-1488.md) | Routine | Microsoft Windows | 3.3 | 0.0086 |  |

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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

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