# CVE-2019-1142: .NET Framework Elevation of Privilege Vulnerability CVE-2019-1142 is fixed in 62 products on 1 platform, first by KB4516044, released September 10, 2019. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2019-1142 - Priority: High - CVSS: n/a (Important) - EPSS: 0.0104 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Less Likely - Published: Sep 10, 2019 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1142 ## Description

An elevation of privilege vulnerability exists when the .NET Framework common language runtime (CLR) allows file creation in arbitrary locations. An attacker who successfully exploited this vulnerability could write files to folders that require higher privileges than what the attacker already has.

To exploit the vulnerability, an attacker would need to log into a system. The attacker could then specify the targeted folder and trigger an affected process to run.

The update addresses the vulnerability correcting how the .NET Framework CLR process logs data.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | | [KB4514601](https://patchblox.com/security/data/fix/microsoft/kb4514601.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | | [KB4514601](https://patchblox.com/security/data/fix/microsoft/kb4514601.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | | [KB4514601](https://patchblox.com/security/data/fix/microsoft/kb4514601.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | | [KB4514601](https://patchblox.com/security/data/fix/microsoft/kb4514601.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | | [KB4514601](https://patchblox.com/security/data/fix/microsoft/kb4514601.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | | [KB4514601](https://patchblox.com/security/data/fix/microsoft/kb4514601.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems | | [KB4514359](https://patchblox.com/security/data/fix/microsoft/kb4514359.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems | | [KB4514359](https://patchblox.com/security/data/fix/microsoft/kb4514359.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | | [KB4514601](https://patchblox.com/security/data/fix/microsoft/kb4514601.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | | [KB4514601](https://patchblox.com/security/data/fix/microsoft/kb4514601.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation) | | [KB4514359](https://patchblox.com/security/data/fix/microsoft/kb4514359.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems | 14393.3204 | [KB4516044](https://patchblox.com/security/data/fix/microsoft/kb4516044.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems | 14393.3204 | [KB4516044](https://patchblox.com/security/data/fix/microsoft/kb4516044.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems | 15063.2045 | [KB4516068](https://patchblox.com/security/data/fix/microsoft/kb4516068.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems | 15063.2045 | [KB4516068](https://patchblox.com/security/data/fix/microsoft/kb4516068.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for 32-bit Systems | 16299.1387 | [KB4516066](https://patchblox.com/security/data/fix/microsoft/kb4516066.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for x64-based Systems | 16299.1387 | [KB4516066](https://patchblox.com/security/data/fix/microsoft/kb4516066.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems | 17134.1006 | [KB4516058](https://patchblox.com/security/data/fix/microsoft/kb4516058.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for x64-based Systems | 17134.1006 | [KB4516058](https://patchblox.com/security/data/fix/microsoft/kb4516058.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems | 10240.18333 | [KB4516070](https://patchblox.com/security/data/fix/microsoft/kb4516070.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems | 10240.18333 | [KB4516070](https://patchblox.com/security/data/fix/microsoft/kb4516070.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 | | [KB4514603](https://patchblox.com/security/data/fix/microsoft/kb4514603.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 | | [KB4514598](https://patchblox.com/security/data/fix/microsoft/kb4514598.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | | [KB4514603](https://patchblox.com/security/data/fix/microsoft/kb4514603.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | | [KB4514598](https://patchblox.com/security/data/fix/microsoft/kb4514598.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2016 | 14393.3204 | [KB4516044](https://patchblox.com/security/data/fix/microsoft/kb4516044.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server 2016 (Server Core installation) | 14393.3204 | [KB4516044](https://patchblox.com/security/data/fix/microsoft/kb4516044.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 3.5 on Windows Server, version 1803 (Server Core Installation) | 17134.1006 | [KB4516058](https://patchblox.com/security/data/fix/microsoft/kb4516058.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows RT 8.1 | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 | | [KB4514603](https://patchblox.com/security/data/fix/microsoft/kb4514603.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 | | [KB4514598](https://patchblox.com/security/data/fix/microsoft/kb4514598.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) | | [KB4514603](https://patchblox.com/security/data/fix/microsoft/kb4514603.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) | | [KB4514598](https://patchblox.com/security/data/fix/microsoft/kb4514598.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for x64-based systems | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for x64-based systems | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows RT 8.1 | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | | [KB4514603](https://patchblox.com/security/data/fix/microsoft/kb4514603.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | | [KB4514598](https://patchblox.com/security/data/fix/microsoft/kb4514598.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) | | [KB4514603](https://patchblox.com/security/data/fix/microsoft/kb4514603.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) | | [KB4514598](https://patchblox.com/security/data/fix/microsoft/kb4514598.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems | | [KB4514354](https://patchblox.com/security/data/fix/microsoft/kb4514354.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | | [KB4514354](https://patchblox.com/security/data/fix/microsoft/kb4514354.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1703 for 32-bit Systems | | [KB4514355](https://patchblox.com/security/data/fix/microsoft/kb4514355.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1703 for x64-based Systems | | [KB4514355](https://patchblox.com/security/data/fix/microsoft/kb4514355.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems | | [KB4514356](https://patchblox.com/security/data/fix/microsoft/kb4514356.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems | | [KB4514356](https://patchblox.com/security/data/fix/microsoft/kb4514356.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems | | [KB4514357](https://patchblox.com/security/data/fix/microsoft/kb4514357.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems | | [KB4514357](https://patchblox.com/security/data/fix/microsoft/kb4514357.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows RT 8.1 | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 | | [KB4514603](https://patchblox.com/security/data/fix/microsoft/kb4514603.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 | | [KB4514598](https://patchblox.com/security/data/fix/microsoft/kb4514598.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | | [KB4514603](https://patchblox.com/security/data/fix/microsoft/kb4514603.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | | [KB4514598](https://patchblox.com/security/data/fix/microsoft/kb4514598.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | | [KB4514599](https://patchblox.com/security/data/fix/microsoft/kb4514599.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | | [KB4514604](https://patchblox.com/security/data/fix/microsoft/kb4514604.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2016 | | [KB4514354](https://patchblox.com/security/data/fix/microsoft/kb4514354.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation) | | [KB4514354](https://patchblox.com/security/data/fix/microsoft/kb4514354.md) | Sep 10, 2019 | | Microsoft | Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation) | 17134.1006 | [KB4516058](https://patchblox.com/security/data/fix/microsoft/kb4516058.md) | Sep 10, 2019 | --- Data as of 2026-11-08T00:53:09Z 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.