SARA / Free Tools / KEV / CVE-2020-0646

CVE-2020-0646 on CISA KEV

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

CISA KEV — Actively Exploited

Microsoft .NET Framework Remote Code Execution Vulnerability

Vendor / Product
— / Microsoft / .NET Framework
Added to KEV
2021-11-03
BOD 22-01 due
2022-05-03
Ransomware use
Unknown
CVSS / EPSS
· EPSS 93.86%

01What CISA says about this 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'.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
MicrosoftMicrosoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2Windows 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)
MicrosoftMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2Windows 10 Version 1607 for 32-bit Systems
MicrosoftMicrosoft .NET Framework 4.8 on Windows 10 Version 1803 for 32bit Systems — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows 10 Version 1803 for x64based Systems — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation)unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows 10 Version 1709 for 32bit Systems — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows 10 Version 1709 for x64based Systems — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows 10 Version 1607 for 32bit Systems — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows 10 Version 1607 for x64based Systems — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows Server 2016unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation)unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows 7 for 32bit Systems Service Pack 1 — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows 7 for x64based Systems Service Pack 1 — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows 8.1 for 32bit systems — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows 8.1 for x64based systems — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows RT 8.1unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows Server 2008 R2 for x64based Systems Service Pack 1 — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows Server 2008 R2 for x64based Systems Service Pack 1 (Server Core installation) — unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows Server 2012unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows Server 2012 R2unspecified
MicrosoftMicrosoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation)unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32bit Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64based Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8 on Windows Server 2019unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32bit Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64based Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation)1903
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32bit Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64based Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)unspecified
MicrosoftMicrosoft .NET Framework 4.6Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2
MicrosoftMicrosoft .NET Framework 3.0Service 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
MicrosoftMicrosoft .NET Framework 3.5Windows 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)
MicrosoftMicrosoft .NET Framework 3.5.1Windows 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)
MicrosoftMicrosoft .NET Framework 4.5.2Windows 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)
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32bit Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation)unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for x64based Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows Server, version 1803 (Server Core Installation)unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for 32bit Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32bit Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64based Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for x64based Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation)unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.2 on Windows 10 for x64based Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32bit Systems — unspecified
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.1/4.7.2 on Windows 10 Version 1709 for 32bit Systems — unspecified

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

Open in Sigma generator →

Programmatic KEV data?
SARA's API returns KEV, CVSS, EPSS + analyst summary in one call.
Read the API reference →