# CVE-2020-1137: Windows Push Notification Service Elevation of Privilege Vulnerability

CVE-2020-1137 is fixed in 20 products on 1 platform, first by KB4556812, released May 12, 2020. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2020-1137
- Priority: High
- CVSS: 7.8 (Important)
- EPSS: 0.0095
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: May 12, 2020
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1137

## Description

<p>An elevation of privilege vulnerability exists in the way the Windows Push Notification Service handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could then install programs; view, change or delete data.</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 security update addresses the vulnerability by correcting how the Windows Push Notification Service handles objects in memory.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1709 for 32-bit Systems | 16299.1868 | [KB4556812](https://patchblox.com/security/data/fix/microsoft/kb4556812.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1709 for ARM64-based Systems | 16299.1868 | [KB4556812](https://patchblox.com/security/data/fix/microsoft/kb4556812.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1709 for x64-based Systems | 16299.1868 | [KB4556812](https://patchblox.com/security/data/fix/microsoft/kb4556812.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1803 for 32-bit Systems | 17134.1488 | [KB4556807](https://patchblox.com/security/data/fix/microsoft/kb4556807.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1803 for ARM64-based Systems | 17134.1488 | [KB4556807](https://patchblox.com/security/data/fix/microsoft/kb4556807.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1803 for x64-based Systems | 17134.1488 | [KB4556807](https://patchblox.com/security/data/fix/microsoft/kb4556807.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1809 for 32-bit Systems | 17763.1217 | [KB4551853](https://patchblox.com/security/data/fix/microsoft/kb4551853.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1809 for ARM64-based Systems | 17763.1217 | [KB4551853](https://patchblox.com/security/data/fix/microsoft/kb4551853.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1809 for x64-based Systems | 17763.1217 | [KB4551853](https://patchblox.com/security/data/fix/microsoft/kb4551853.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1903 for 32-bit Systems |  | [KB4556799](https://patchblox.com/security/data/fix/microsoft/kb4556799.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems |  | [KB4556799](https://patchblox.com/security/data/fix/microsoft/kb4556799.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1903 for x64-based Systems |  | [KB4556799](https://patchblox.com/security/data/fix/microsoft/kb4556799.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1909 for 32-bit Systems |  | [KB4556799](https://patchblox.com/security/data/fix/microsoft/kb4556799.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1909 for ARM64-based Systems |  | [KB4556799](https://patchblox.com/security/data/fix/microsoft/kb4556799.md) | May 12, 2020 |
| Microsoft | Windows 10 Version 1909 for x64-based Systems |  | [KB4556799](https://patchblox.com/security/data/fix/microsoft/kb4556799.md) | May 12, 2020 |
| Microsoft | Windows Server 2019 | 17763.1217 | [KB4551853](https://patchblox.com/security/data/fix/microsoft/kb4551853.md) | May 12, 2020 |
| Microsoft | Windows Server 2019 (Server Core installation) | 17763.1217 | [KB4551853](https://patchblox.com/security/data/fix/microsoft/kb4551853.md) | May 12, 2020 |
| Microsoft | Windows Server, version 1803  (Server Core Installation) | 17134.1488 | [KB4556807](https://patchblox.com/security/data/fix/microsoft/kb4556807.md) | May 12, 2020 |
| Microsoft | Windows Server, version 1903 (Server Core installation) |  | [KB4556799](https://patchblox.com/security/data/fix/microsoft/kb4556799.md) | May 12, 2020 |
| Microsoft | Windows Server, version 1909 (Server Core installation) |  | [KB4556799](https://patchblox.com/security/data/fix/microsoft/kb4556799.md) | May 12, 2020 |

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