CVE-2020-1046

21

FAUCET Score

CVE-2020-1046 is a remote code execution vulnerability in Microsoft .NET Framework, affecting various Windows operating systems. An attacker could exploit this by uploading a specially crafted file to a web application, potentially gaining full control of the system. Rated with a CVSS score of 7.8 (High), it requires user interaction and has a high impact on confidentiality, integrity, and availability. While not currently on the KEV catalog and lacking public exploit code, it received some media coverage and community discussion at the time of its disclosure.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		2.0CPE matchmatch criteria	cpe:2.3:a:microsoft:.net_framework:2.0:sp2::::::
		3.5CPE matchmatch criteria	cpe:2.3:a:microsoft:.net_framework:3.5:::::::*
		4.7.2CPE matchmatch criteria	cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*
		3.5.1CPE matchmatch criteria	cpe:2.3:a:microsoft:.net_framework:3.5.1:::::::*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

1.8

Impact Score

5.9

CvssVersion

3.1

Exploit Intelligence

EPSS Score

3.76%

Probability of exploitation in next 30 days

EPSS Percentile

88.8%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0376 is in the 89th percentile among its peer group of 11,621 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (89)

microsoftpatch availablevia nvd_reference

microsoftpatch availablevia msrc

Product: 2472-11713

microsoftpatch availablevia msrc

Product: 2472-11644

microsoftpatch availablevia msrc

Product: 2472-11645

microsoftpatch availablevia msrc

Product: 2472-11646

microsoftpatch availablevia msrc

Product: 2472-11647

microsoftpatch availablevia msrc

Product: 2472-11712

microsoftpatch availablevia msrc

Product: 2472-11714

microsoftpatch availablevia msrc

Product: 2472-11715

microsoftpatch availablevia msrc

Product: 11676-11572

microsoftpatch availablevia msrc

Product: 11676-11571

microsoftpatch availablevia msrc

Product: 11676-11569

microsoftpatch availablevia msrc

Product: 11676-11568

microsoftpatch availablevia msrc

Product: 11677-11572

microsoftpatch availablevia msrc

Product: 11677-11570

microsoftpatch availablevia msrc

Product: 11677-11571

microsoftpatch availablevia msrc

Product: 11677-11568

microsoftpatch availablevia msrc

Product: 11677-11569

microsoftpatch availablevia msrc

Product: 9292-9312

microsoftpatch availablevia msrc

Product: 9292-9318

microsoftpatch availablevia msrc

Product: 2472-11497

microsoftpatch availablevia msrc

Product: 2472-11498

microsoftpatch availablevia msrc

Product: 2472-11563

microsoftpatch availablevia msrc

Product: 2472-11583

microsoftpatch availablevia msrc

Product: 2472-11453

microsoftpatch availablevia msrc

Product: 2472-11454

microsoftpatch availablevia msrc

Product: 2472-10852

microsoftpatch availablevia msrc

Product: 2472-10855

microsoftpatch availablevia msrc

Product: 2472-10816

microsoftpatch availablevia msrc

Product: 2472-10853

microsoftpatch availablevia msrc

Product: 2472-10543

microsoftpatch availablevia msrc

Product: 2472-10482

microsoftpatch availablevia msrc

Product: 2472-10483

microsoftpatch availablevia msrc

Product: 2472-10481

microsoftpatch availablevia msrc

Product: 9495-10048

microsoftpatch availablevia msrc

Product: 9495-10047

microsoftpatch availablevia msrc

Product: 9495-10051

microsoftpatch availablevia msrc

Product: 2472-10378

microsoftpatch availablevia msrc

Product: 2472-10379

microsoftpatch availablevia msrc

Product: 2472-10735

microsoftpatch availablevia msrc

Product: 2472-10729

microsoftpatch availablevia msrc

Product: 2472-11766

microsoftpatch availablevia msrc

Product: 2472-11767

microsoftpatch availablevia msrc

Product: 2472-11768

microsoftpatch availablevia msrc

Product: 2472-11769

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1909 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1903 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1903 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1903 for ARM64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server, version 1903 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1909 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1909 for ARM64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server, version 1909 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for ARM64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for ARM64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2016 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2016

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2012 R2

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2012

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation)

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 2004 for 32-bit Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 2004 for ARM64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows 10 Version 2004 for x64-based Systems

microsoftpatch availablevia msrc

Product: Microsoft .NET Framework 3.5 on Windows Server, version 2004 (Server Core installation)

Vendor Advisories (1)

microsoft2020-Aug/CVE-2020-1046Critical

.NET Framework Remote Code Execution Vulnerability

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2020-1046

PatchVendor Advisory