# CVE-2019-1478: Windows COM Server Elevation of Privilege Vulnerability

CVE-2019-1478 is fixed in 10 products on 1 platform, first by KB4530734, released December 10, 2019. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-1478
- Priority: High
- CVSS: 7.8 (Important)
- EPSS: 0.0089
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: N/A
- Published: Dec 10, 2019
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1478

## Description

<p>An elevation of privilege vulnerability exists when Windows improperly handles COM object creation. An attacker who successfully exploited the vulnerability could run arbitrary code with elevated privileges.</p> <p>To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.</p> <p>The update addresses the vulnerability by correcting how the Windows COM Server creates COM objects.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 7 for 32-bit Systems Service Pack 1 |  | [KB4530734](https://patchblox.com/security/data/fix/microsoft/kb4530734.md) | Dec 10, 2019 |
| Microsoft | Windows 7 for 32-bit Systems Service Pack 1 |  | [KB4530692](https://patchblox.com/security/data/fix/microsoft/kb4530692.md) | Dec 10, 2019 |
| Microsoft | Windows 7 for x64-based Systems Service Pack 1 |  | [KB4530734](https://patchblox.com/security/data/fix/microsoft/kb4530734.md) | Dec 10, 2019 |
| Microsoft | Windows 7 for x64-based Systems Service Pack 1 |  | [KB4530692](https://patchblox.com/security/data/fix/microsoft/kb4530692.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 |  | [KB4530734](https://patchblox.com/security/data/fix/microsoft/kb4530734.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 |  | [KB4530692](https://patchblox.com/security/data/fix/microsoft/kb4530692.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB4530734](https://patchblox.com/security/data/fix/microsoft/kb4530734.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB4530692](https://patchblox.com/security/data/fix/microsoft/kb4530692.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |  | [KB4530734](https://patchblox.com/security/data/fix/microsoft/kb4530734.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |  | [KB4530692](https://patchblox.com/security/data/fix/microsoft/kb4530692.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 |  | [KB4530719](https://patchblox.com/security/data/fix/microsoft/kb4530719.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 |  | [KB4530695](https://patchblox.com/security/data/fix/microsoft/kb4530695.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) |  | [KB4530719](https://patchblox.com/security/data/fix/microsoft/kb4530719.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) |  | [KB4530695](https://patchblox.com/security/data/fix/microsoft/kb4530695.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 |  | [KB4530719](https://patchblox.com/security/data/fix/microsoft/kb4530719.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 |  | [KB4530695](https://patchblox.com/security/data/fix/microsoft/kb4530695.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 |  | [KB4530719](https://patchblox.com/security/data/fix/microsoft/kb4530719.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 |  | [KB4530695](https://patchblox.com/security/data/fix/microsoft/kb4530695.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) |  | [KB4530719](https://patchblox.com/security/data/fix/microsoft/kb4530719.md) | Dec 10, 2019 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) |  | [KB4530695](https://patchblox.com/security/data/fix/microsoft/kb4530695.md) | Dec 10, 2019 |

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