# CVE-2019-1045: Windows Network File System Elevation of Privilege Vulnerability CVE-2019-1045 is fixed in 19 products on 1 platform, first by KB4503279, released June 11, 2019. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2019-1045 - Priority: High - CVSS: 7.8 (Important) - EPSS: 0.0100 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: N/A - Published: Jun 11, 2019 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1045 ## Description

An elevation of privilege vulnerability exists in the way that the Windows Network File System (NFS) handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions.

To exploit the vulnerability, a locally authenticated attacker could run a specially crafted application.

The security update addresses the vulnerability by ensuring the Windows NFS properly handles objects in memory.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1703 for 32-bit Systems | 15063.1868 | [KB4503279](https://patchblox.com/security/data/fix/microsoft/kb4503279.md) | Jun 11, 2019 | | Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.1868 | [KB4503279](https://patchblox.com/security/data/fix/microsoft/kb4503279.md) | Jun 11, 2019 | | Microsoft | Windows 10 Version 1709 for 32-bit Systems | 16299.1217 | [KB4503284](https://patchblox.com/security/data/fix/microsoft/kb4503284.md) | Jun 11, 2019 | | Microsoft | Windows 10 Version 1709 for ARM64-based Systems | 16299.1217 | [KB4503284](https://patchblox.com/security/data/fix/microsoft/kb4503284.md) | Jun 11, 2019 | | Microsoft | Windows 10 Version 1709 for x64-based Systems | 16299.1217 | [KB4503284](https://patchblox.com/security/data/fix/microsoft/kb4503284.md) | Jun 11, 2019 | | Microsoft | Windows 10 for 32-bit Systems | 10240.18244 | [KB4503291](https://patchblox.com/security/data/fix/microsoft/kb4503291.md) | Jun 11, 2019 | | Microsoft | Windows 10 for x64-based Systems | 10240.18244 | [KB4503291](https://patchblox.com/security/data/fix/microsoft/kb4503291.md) | Jun 11, 2019 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4503292](https://patchblox.com/security/data/fix/microsoft/kb4503292.md) | Jun 11, 2019 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4503269](https://patchblox.com/security/data/fix/microsoft/kb4503269.md) | Jun 11, 2019 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4503292](https://patchblox.com/security/data/fix/microsoft/kb4503292.md) | Jun 11, 2019 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4503269](https://patchblox.com/security/data/fix/microsoft/kb4503269.md) | Jun 11, 2019 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4503276](https://patchblox.com/security/data/fix/microsoft/kb4503276.md) | Jun 11, 2019 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4503290](https://patchblox.com/security/data/fix/microsoft/kb4503290.md) | Jun 11, 2019 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4503276](https://patchblox.com/security/data/fix/microsoft/kb4503276.md) | Jun 11, 2019 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4503290](https://patchblox.com/security/data/fix/microsoft/kb4503290.md) | Jun 11, 2019 | | Microsoft | Windows RT 8.1 | | [KB4503276](https://patchblox.com/security/data/fix/microsoft/kb4503276.md) | Jun 11, 2019 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4503292](https://patchblox.com/security/data/fix/microsoft/kb4503292.md) | Jun 11, 2019 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4503269](https://patchblox.com/security/data/fix/microsoft/kb4503269.md) | Jun 11, 2019 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4503292](https://patchblox.com/security/data/fix/microsoft/kb4503292.md) | Jun 11, 2019 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4503269](https://patchblox.com/security/data/fix/microsoft/kb4503269.md) | Jun 11, 2019 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4503292](https://patchblox.com/security/data/fix/microsoft/kb4503292.md) | Jun 11, 2019 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4503269](https://patchblox.com/security/data/fix/microsoft/kb4503269.md) | Jun 11, 2019 | | Microsoft | Windows Server 2012 | | [KB4503285](https://patchblox.com/security/data/fix/microsoft/kb4503285.md) | Jun 11, 2019 | | Microsoft | Windows Server 2012 | | [KB4503263](https://patchblox.com/security/data/fix/microsoft/kb4503263.md) | Jun 11, 2019 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4503285](https://patchblox.com/security/data/fix/microsoft/kb4503285.md) | Jun 11, 2019 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4503263](https://patchblox.com/security/data/fix/microsoft/kb4503263.md) | Jun 11, 2019 | | Microsoft | Windows Server 2012 R2 | | [KB4503276](https://patchblox.com/security/data/fix/microsoft/kb4503276.md) | Jun 11, 2019 | | Microsoft | Windows Server 2012 R2 | | [KB4503290](https://patchblox.com/security/data/fix/microsoft/kb4503290.md) | Jun 11, 2019 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4503276](https://patchblox.com/security/data/fix/microsoft/kb4503276.md) | Jun 11, 2019 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4503290](https://patchblox.com/security/data/fix/microsoft/kb4503290.md) | Jun 11, 2019 | --- 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 Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.