CVE-2020-0646

Microsoft Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2

CRITICAL 9.8CISA KEV ↗Exploited per ENISA since 2021-11-03

At a glance

Source: NVD
EPSS: EPSS 99.22 % · percentile 100 (2026-10-28)
State: PUBLISHED
Published: 2020-01-14 23:11 UTC
Updated: 2025-10-21 23:35 UTC
Assigner: microsoft
NVD status: Analyzed

Description

A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote Code Execution Injection Vulnerability'.

Weaknesses (CWE)

CWE-91 — XML Injection

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 2.0	HIGH 10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C	NVD · nvd@nist.gov (Primary)

European references

ENISA EUVD · EUVD-2020-2140
GCVE · GCVE-0-2020-0646

CERT-FR advisories

CERTFR-2020-AVI-027 — Multiples vulnérabilités dans Microsoft .Net · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*

Affected products

Product	Versions
Microsoft · Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2	affected Windows 7 for 32-bit Systems Service Pack 1 ; affected Windows 7 for x64-based Systems Service Pack 1 ; affected Windows 8.1 for 32-bit systems ; affected Windows 8.1 for x64-based systems ; affected Windows RT 8.1 ; affected Windows Server 2008 R2 for x64-based Systems Service Pack 1
Microsoft · Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2	affected Windows 10 Version 1607 for 32-bit Systems
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation)	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2016	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows RT 8.1	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012	affected unspecified
Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)	affected unspecified

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
CISA Known Exploited Vulnerabilities	CC0 1.0
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD