Answer in brief
CVE-2020-0646 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps Microsoft/Microsoft .NET Framework 3.0 (generic), Microsoft/Microsoft .NET Framework 3.5 (generic), Microsoft/Microsoft .NET Framework 3.5.1 (generic), 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 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Microsoft/Microsoft .NET Framework 3.0 (generic), Microsoft/Microsoft .NET Framework 3.5 (generic), Microsoft/Microsoft .NET Framework 3.5.1 (generic), 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 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Microsoft/Microsoft .NET Framework 3.0generic | Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 || Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 || Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | Not reported |
| Microsoft/Microsoft .NET Framework 3.5generic | Windows 10 Version 1607 for 32-bit Systems || Windows 8.1 for 32-bit systems || Windows 8.1 for x64-based systems || Windows Server 2012 || Windows Server 2012 (Server Core installation) || Windows Server 2012 R2 || Windows Server 2012 R2 (Server Core installation) | Not reported |
| Microsoft/Microsoft .NET Framework 3.5.1generic | Windows 7 for 32-bit Systems Service Pack 1 || Windows 7 for x64-based Systems Service Pack 1 || Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | Not reported |
| 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 Systemsgeneric | unspecified | Not reported |
| 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 Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016generic | unspecified | Not reported |
| 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)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation)generic | 1903 | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.5.2generic | Windows 7 for 32-bit Systems Service Pack 1 || Windows 7 for x64-based Systems Service Pack 1 || Windows 8.1 for 32-bit systems || Windows 8.1 for x64-based systems || Windows RT 8.1 || Windows Server 2008 for 32-bit Systems Service Pack 2 || Windows Server 2008 for x64-based Systems Service Pack 2 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) || Windows Server 2012 || Windows Server 2012 (Server Core installation) || Windows Server 2012 R2 || Windows Server 2012 R2 (Server Core installation) | Not reported |
| Microsoft/Microsoft .NET Framework 4.6generic | Windows Server 2008 for 32-bit Systems Service Pack 2 || Windows Server 2008 for x64-based Systems Service Pack 2 | Not reported |
| Microsoft/Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2generic | Windows 10 Version 1607 for 32-bit Systems | Not reported |
| Microsoft/Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2generic | Windows 7 for 32-bit Systems Service Pack 1 || Windows 7 for x64-based Systems Service Pack 1 || Windows 8.1 for 32-bit systems || Windows 8.1 for x64-based systems || Windows RT 8.1 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) || Windows Server 2012 || Windows Server 2012 (Server Core installation) || Windows Server 2012 R2 || Windows Server 2012 R2 (Server Core installation) | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows RT 8.1generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2012generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2012 R2generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2016generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation)generic | unspecified | Not reported |
Published upstream
Jan 14, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Nov 3, 2021
Evidence: source:kev:kev:kev:recordA remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote Code Execution Injection Vulnerability'.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2020-0646 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps Microsoft/Microsoft .NET Framework 3.0 (generic), Microsoft/Microsoft .NET Framework 3.5 (generic), Microsoft/Microsoft .NET Framework 3.5.1 (generic), 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 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Microsoft/Microsoft .NET Framework 3.0 (generic), Microsoft/Microsoft .NET Framework 3.5 (generic), Microsoft/Microsoft .NET Framework 3.5.1 (generic), 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 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Microsoft/Microsoft .NET Framework 3.0generic | Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 || Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 || Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | Not reported |
| Microsoft/Microsoft .NET Framework 3.5generic | Windows 10 Version 1607 for 32-bit Systems || Windows 8.1 for 32-bit systems || Windows 8.1 for x64-based systems || Windows Server 2012 || Windows Server 2012 (Server Core installation) || Windows Server 2012 R2 || Windows Server 2012 R2 (Server Core installation) | Not reported |
| Microsoft/Microsoft .NET Framework 3.5.1generic | Windows 7 for 32-bit Systems Service Pack 1 || Windows 7 for x64-based Systems Service Pack 1 || Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | Not reported |
| 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 Systemsgeneric | unspecified | Not reported |
| 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 Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016generic | unspecified | Not reported |
| 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)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation)generic | 1903 | Not reported |
| Microsoft/Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.5.2generic | Windows 7 for 32-bit Systems Service Pack 1 || Windows 7 for x64-based Systems Service Pack 1 || Windows 8.1 for 32-bit systems || Windows 8.1 for x64-based systems || Windows RT 8.1 || Windows Server 2008 for 32-bit Systems Service Pack 2 || Windows Server 2008 for x64-based Systems Service Pack 2 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) || Windows Server 2012 || Windows Server 2012 (Server Core installation) || Windows Server 2012 R2 || Windows Server 2012 R2 (Server Core installation) | Not reported |
| Microsoft/Microsoft .NET Framework 4.6generic | Windows Server 2008 for 32-bit Systems Service Pack 2 || Windows Server 2008 for x64-based Systems Service Pack 2 | Not reported |
| Microsoft/Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2generic | Windows 10 Version 1607 for 32-bit Systems | Not reported |
| Microsoft/Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2generic | Windows 7 for 32-bit Systems Service Pack 1 || Windows 7 for x64-based Systems Service Pack 1 || Windows 8.1 for 32-bit systems || Windows 8.1 for x64-based systems || Windows RT 8.1 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 || Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) || Windows Server 2012 || Windows Server 2012 (Server Core installation) || Windows Server 2012 R2 || Windows Server 2012 R2 (Server Core installation) | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systemsgeneric | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows RT 8.1generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2012generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2012 R2generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2016generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)generic | unspecified | Not reported |
| Microsoft/Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation)generic | unspecified | Not reported |
Published upstream
Jan 14, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Nov 3, 2021
Evidence: source:kev:kev:kev:recordA remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote Code Execution Injection Vulnerability'.
Quoted source text, attributed separately from HOL analysis.