# CVE-2019-1379: Windows Data Sharing Service Elevation of Privilege Vulnerability

CVE-2019-1379 is fixed in 5 products on 1 platform, first by KB4523205, released November 12, 2019. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-1379
- Priority: High
- CVSS: 7.8 (Important)
- EPSS: 0.0077
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: N/A
- Published: Nov 12, 2019
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1379

## Description

<p>An elevation of privilege vulnerability exists when the Windows Data Sharing Service improperly handles file operations. An attacker who successfully exploited this vulnerability could run processes in an elevated context.</p> <p>An attacker could exploit this vulnerability by running a specially crafted application on the victim system.</p> <p>The update addresses the vulnerability by correcting the way the Windows Data Sharing Service handles file operations.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1809 for 32-bit Systems | 17763.864 | [KB4523205](https://patchblox.com/security/data/fix/microsoft/kb4523205.md) | Nov 12, 2019 |
| Microsoft | Windows 10 Version 1809 for ARM64-based Systems | 17763.864 | [KB4523205](https://patchblox.com/security/data/fix/microsoft/kb4523205.md) | Nov 12, 2019 |
| Microsoft | Windows 10 Version 1809 for x64-based Systems | 17763.864 | [KB4523205](https://patchblox.com/security/data/fix/microsoft/kb4523205.md) | Nov 12, 2019 |
| Microsoft | Windows Server 2019 | 17763.864 | [KB4523205](https://patchblox.com/security/data/fix/microsoft/kb4523205.md) | Nov 12, 2019 |
| Microsoft | Windows Server 2019 (Server Core installation) | 17763.864 | [KB4523205](https://patchblox.com/security/data/fix/microsoft/kb4523205.md) | Nov 12, 2019 |

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Data as of 2026-11-07T18:46:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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