CVE-2020-1066

.NET Framework Elevation of Privilege Vulnerability

HIGH
7.8
CVSS Score
Published: May 21, 2020 at 10:52 PM UTC
Updated: August 19, 2026 at 05:35 PM UTC
4 products affected across 1 vendor.NET Framework.netWindows Server 2008

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Severity
HIGH7.8
Exploit prediction
EPSS 3%

Description

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., aka '.NET Framework Elevation of Privilege Vulnerability'.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

3.0.0 ≤ v < publication3.5.0 ≤ v < publication
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
3.0.0 ≤ v < publication3.5.0 ≤ v < publication3.0 sp23.0.03.5.03.5.1
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
microsoft-windows-7 (environment) · microsoft-windows-server-2008 (environment)
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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