.NET Framework
CVE-2019-1142 — .NET Framework Elevation of Privilege Vulnerability
Executive Summary
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.
Overview
5.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
EPSS Score
0.01039
probability of exploitation in the next 30 days
0.60423 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
38 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | 4514601 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | 4514601 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | 4514601 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | 4514601 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | 4514601 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | 4514601 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems | 4514359 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems | 4514359 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | 4514601 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | 4514601 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation) | 4514359 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems | 4516070 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems | 4516070 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems | 4516044 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems | 4516044 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems | 4516068 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems | 4516068 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for 32-bit Systems | 4516066 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for x64-based Systems | 4516066 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems | 4516058 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for x64-based Systems | 4516058 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems 4514599 (Security Only) 4514604 (Monthly Rollup) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 4514603 (Monthly Rollup) 4514598 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) 4514603 (Monthly Rollup) 4514598 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 R2 4514599 (Security Only) 4514604 (Monthly Rollup) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) 4514599 (Security Only) 4514604 (Monthly Rollup) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 3.5 on Windows Server 2016 | 4516044 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows Server 2016 (Server Core installation) | 4516044 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 on Windows Server, version 1803 (Server Core Installation) | 4516058 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows RT 8.1 | 4514604 (Monthly Rollup) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 4514603 (Monthly Rollup) 4514598 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) 4514603 (Monthly Rollup) 4514598 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None 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 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None 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 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows RT 8.1 | 4514604 (Monthly Rollup) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 4514603 (Monthly Rollup) 4514598 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None 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) 4514603 (Monthly Rollup) 4514598 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None 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) 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems | 4514354 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | 4514354 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1703 for 32-bit Systems | 4514355 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1703 for x64-based Systems | 4514355 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems | 4514356 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems | 4514356 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems | 4514357 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems | 4514357 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows RT 8.1 | 4514604 (Monthly Rollup) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 4514603 (Monthly Rollup) 4514598 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) 4514603 (Monthly Rollup) 4514598 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2012 R2 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) 4514604 (Monthly Rollup) 4514599 (Security Only) Important Elevation of Privilege Base: N/A Temporal: N/A Vector: N/A Maybe None Microsoft .NET Framework 4.8 on Windows Server 2016 | 4514354 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation) | 4514354 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation) | 4516058 (Security Update) |
Important | Elevation of Privilege | Yes |
Patches
12 patches
| Article | Type | Restart |
|---|---|---|
4514601 |
Security Update | Maybe |
4514359 |
Security Update | Maybe |
4516070 |
Security Update | Yes |
4516044 |
Security Update | Yes |
4516068 |
Security Update | Yes |
4516066 |
Security Update | Yes |
4516058 |
Security Update | Yes |
4514604 |
Monthly Rollup | Maybe |
4514354 |
Security Update | Maybe |
4514355 |
Security Update | Maybe |
4514356 |
Security Update | Maybe |
4514357 |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Eran Shimony of CyberArk Labs
References
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