What is CVE-2020-1066?

CVE-2020-1066 is a security advisory published by Microsoft with High severity. EchelonGraph links Microsoft's advisory rather than copying its page; it is at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1066.

Which CVE IDs does CVE-2020-1066 cover?

CVE-2020-1066 covers the following CVE IDs: CVE-2020-1066. Each CVE has its own detail page on EchelonGraph Pulse with its EchelonGraph score.

Which products are affected by CVE-2020-1066?

CVE-2020-1066 affects 6 products, including: Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2; Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2; Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1; Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1; Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1; and others — see the full list on the advisory page.

How do I remediate CVE-2020-1066?

Microsoft lists 4 KB articles for CVE-2020-1066: KB4552939, KB4552964, KB4552940, KB4552965. Each is listed on this page with its update type and, where Microsoft gives one, its fixed build; Microsoft's advisory is at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1066.

CVE-2020-1066High

Microsoft security update for CVE-2020-1066 — Microsoft .NET Framework

Vendor

Microsoft Security Response Center (MSRC)

Published

May 12, 2020

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2020-1066 →

📋 Microsoft's advisory

EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1066. This page also shows what EchelonGraph holds for CVE-2020-1066, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.

🎯 Affected products6

Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1
Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

✅ Updates Microsoft lists: 4 KB articles

4 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.

KB article	Update	Fixed build
KB4552939	Monthly Rollup	—
KB4552964	Security Only	—
KB4552940	Monthly Rollup	—
KB4552965	Security Only	—

🧭 EchelonGraph on CVE-2020-1066

EchelonGraph score: 7.8 HIGH
CISA KEV: Not listed
Fix status: A fix is available — apply it.

Description from the CVE record (CVE.org), as published by its numbering authority

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

Published by Microsoft Corporation, the CVE Numbering Authority that assigned CVE-2020-1066, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).

🔗 CVE IDs covered (1)

📋 Microsoft's advisory

🎯 Affected products6

✅ Updates Microsoft lists: 4 KB articles

🧭 EchelonGraph on CVE-2020-1066

🔗 References (9)