CVE-2020-0646

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.992 · 100 %ileexploit · weaponizedEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 2 exploits · weaponized

Likely / severe?

99.2% (100th) EPSS

CVSS 10 · high

Is it mine?

109 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · fstec_bdu

added 2021-11-03remediate by 2022-05-03

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-23

Microsoft .NET Framework Remote Code Execution Vulnerability

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

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9.8–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-91USprimaryCWE-20US

exploits (2)

Public proof-of-concept and weaponised exploit code.

exploit/windows/http/sharepoint_workflows_xomlSharePoint Workflows XOML Injectionweaponized · metasploit
EDB-48275SharePoint Workflows - XOML Injection (Metasploit)functional · exploit_db

affected products (109)

Products and version ranges known to be affected.

Microsoft Microsoft .NET Framework 3.0≤ Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2enisa_euvdEU
Microsoft Microsoft .NET Framework 3.0≤ Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2enisa_euvdEU
Microsoft Microsoft .NET Framework 3.0≤ Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5≤ Windows 8.1 for x64-based systemsenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5≤ Windows Server 2012 R2 (Server Core installation)enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5≤ Windows 8.1 for 32-bit systemsenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5≤ Windows Server 2012 (Server Core installation)enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5≤ Windows 10 Version 1607 for 32-bit Systemsenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5≤ Windows Server 2012 R2enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5≤ Windows Server 2012enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems≤ unspecifiedenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems≤ unspecifiedenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016≤ unspecifiedenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation)≤ unspecifiedenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systems≤ unspecifiedenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systems≤ unspecifiedenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems≤ unspecifiedenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems≤ unspecifiedenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems≤ unspecifiedenisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems≤ unspecifiedenisa_euvdEU

showing 20 of 109

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu NVD CVE.org MITRE

published 2020-01-14modified 2026-06-17

related (202)

Related entries.

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Stack-based buffer overflow in the URL parsing implementation in Mozilla Firefox before 2.0.0.17 and SeaMonkey before 1.1.12 allows remote attackers to execute arbitrary code via a…
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An XML external entity injection (XXE) vulnerability in HPE Insight Remote Support may allow remote users to disclose information in certain cases.

+197 more

references (10)

External citations — patches, advisories, analysis.

scry

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