CVE-2020-1066

.NET Framework Elevation of Privilege Vulnerability

CVE-2020-1066 is fixed in 6 products on 1 platform, first by KB4556406, released May 14, 2020. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
n/a
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0252
84th percentile

<p>An elevation of privilege vulnerability exists in .NET Framework which could allow an attacker to elevate their privilege level.</p> <p>To exploit the vulnerability, an attacker would first have to access the local machine, and then run a malicious program.</p> <p>The update addresses the vulnerability by correcting how .NET Framework activates COM objects.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 KB4556406 May 14, 2020
Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 KB4556402 May 14, 2020
Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 KB4556406 May 14, 2020
Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 KB4556402 May 14, 2020
Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 KB4556403 May 14, 2020
Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 KB4556399 May 14, 2020
Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 KB4556403 May 14, 2020
Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 KB4556399 May 14, 2020
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4556403 May 14, 2020
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4556399 May 14, 2020
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4556403 May 14, 2020
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4556399 May 14, 2020

Patch Radar data is free to use with attribution. Terms and how to credit it.

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.