CVE-2020-1046

.NET Framework Remote Code Execution Vulnerability

HIGH

7.8

CVSS Score

Published: August 17, 2020 at 07:12 PM UTC

Updated: June 17, 2026 at 03:00 AM UTC

9 products affected across 1 vendor.NET Framework.netWindows Server 2016

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Severity

HIGH7.8

Exploit prediction

EPSS 4%

Description

A remote code execution vulnerability exists when Microsoft .NET Framework processes input. An attacker who successfully exploited this vulnerability could take control of an affected system. To exploit the vulnerability, an attacker would need to be able to upload a specially crafted file to a web application. The security update addresses the vulnerability by correcting how .NET Framework processes input.

Affected

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

.net · Microsoft

95%

2.0 3.5 3.5.1 4.7.2 4.8

.NET Framework · Microsoft

95%

2.0.0 ≤ v < publication3.5.0 ≤ v < publication4.7.0 ≤ v < publication4.8.0 ≤ v < publication2.0 sp2 2.0.0 3.5 3.5.0 3.5.1 4.7.0 4.7.2 4.8.0

Affected range stops below publication, so it looks safe — our inference, not a vendor statement

microsoft-windows-10 (environment) · microsoft-windows-7 (environment) · microsoft-windows-8-1 (environment) · microsoft-windows-server-2008 (environment) · microsoft-windows-server-2012 (environment) · microsoft-windows-server-2016 (environment) · microsoft-windows-server-2019 (environment)

Windows 10 · Microsoftdevice

80%

All versions

Windows 7 · Microsoftdevice

80%

All versions

Windows 8-1 · Microsoftdevice

80%

All versions

Windows Server 2008 · Microsoftdevice

80%

All versions