# CVE-2019-1322: Microsoft Windows Elevation of Privilege Vulnerability

CVE-2019-1322 is fixed in 13 products on 1 platform, first by KB4520008, released October 8, 2019. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on March 15, 2022, with known ransomware use. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/cve/CVE-2019-1322
- Priority: Patch now
- CVSS: 7.0 (Important)
- EPSS: 0.1884
- CISA KEV: listed Mar 15, 2022, federal due date Apr 5, 2022, known ransomware use
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Oct 9, 2019
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1322

## Description

<p>An elevation of privilege vulnerability exists when Windows improperly handles authentication requests. 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 Windows handles authentication requests.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1803 for 32-bit Systems | 17134.1069 | [KB4520008](https://patchblox.com/security/data/fix/microsoft/kb4520008.md) | Oct 8, 2019 |
| Microsoft | Windows 10 Version 1803 for ARM64-based Systems | 17134.1069 | [KB4520008](https://patchblox.com/security/data/fix/microsoft/kb4520008.md) | Oct 8, 2019 |
| Microsoft | Windows 10 Version 1803 for x64-based Systems | 17134.1069 | [KB4520008](https://patchblox.com/security/data/fix/microsoft/kb4520008.md) | Oct 8, 2019 |
| Microsoft | Windows 10 Version 1809 for 32-bit Systems | 17763.805 | [KB4519338](https://patchblox.com/security/data/fix/microsoft/kb4519338.md) | Oct 8, 2019 |
| Microsoft | Windows 10 Version 1809 for ARM64-based Systems | 17763.805 | [KB4519338](https://patchblox.com/security/data/fix/microsoft/kb4519338.md) | Oct 8, 2019 |
| Microsoft | Windows 10 Version 1809 for x64-based Systems | 17763.805 | [KB4519338](https://patchblox.com/security/data/fix/microsoft/kb4519338.md) | Oct 8, 2019 |
| Microsoft | Windows 10 Version 1903 for 32-bit Systems | 18362.418 | [KB4517389](https://patchblox.com/security/data/fix/microsoft/kb4517389.md) | Oct 8, 2019 |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | 18362.418 | [KB4517389](https://patchblox.com/security/data/fix/microsoft/kb4517389.md) | Oct 8, 2019 |
| Microsoft | Windows 10 Version 1903 for x64-based Systems | 18362.418 | [KB4517389](https://patchblox.com/security/data/fix/microsoft/kb4517389.md) | Oct 8, 2019 |
| Microsoft | Windows Server 2019 | 17763.805 | [KB4519338](https://patchblox.com/security/data/fix/microsoft/kb4519338.md) | Oct 8, 2019 |
| Microsoft | Windows Server 2019 (Server Core installation) | 17763.805 | [KB4519338](https://patchblox.com/security/data/fix/microsoft/kb4519338.md) | Oct 8, 2019 |
| Microsoft | Windows Server, version 1803  (Server Core Installation) | 17134.1069 | [KB4520008](https://patchblox.com/security/data/fix/microsoft/kb4520008.md) | Oct 8, 2019 |
| Microsoft | Windows Server, version 1903 (Server Core installation) | 18362.418 | [KB4517389](https://patchblox.com/security/data/fix/microsoft/kb4517389.md) | Oct 8, 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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