CVE Tools
Sign in

CVE-2020-1046

.NET Framework Remote Code Execution Vulnerability

Published: Aug 17, 2020Updated: Feb 23, 2026 Sources: CVE List NVD BDUNVD-CWE-noinfo
7.8HIGH
NVD MITRE
EPSS Score
3.8%
Top 11.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

A remote code execution vulnerability exists when Microsoft .NET Framework processes input. An attacker who successfully exploited this vulnerability could take control of an affected system. To exploit the vulnerability, an attacker would need to be able to upload a specially crafted file to a web application. The security update addresses the vulnerability by correcting how .NET Framework processes input.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

NVD-CWE-noinfo

Affected Products

Microsoft Corp
commercial·USaka microsoft, microsoft corporation
.net frameworkLibraryLibrary
OSS Libraries / generic-library
Microsoft .NET Framework 3.5On-premLibrary
OSS Libraries / generic-library
Microsoft .NET Framework 3.5 AND 4.8LibraryLibrary
OSS Libraries / generic-library
Microsoft .NET Framework 3.5 AND 4.7.2LibraryLibrary
OSS Libraries / generic-library
Microsoft .NET Framework 2.0 Service Pack 2LibraryLibrary
OSS Libraries / generic-library
Microsoft .NET Framework 3.5.1On-premLibrary
OSS Libraries / generic-library
Microsoft .NET Framework 4.7.2On-premLibrary
OSS Libraries / generic-library
and 3 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2020-1046?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1046
portal.msrc.microsoft.com
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1046
portal.msrc.microsoft.com
https://nvd.nist.gov/vuln/detail/CVE-2020-1046
nvd.nist.gov
and 1 more references View all →
News mentions
Could not load news mentions.

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2020-1046 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows