.NET Framework
CVE-2026-50646 — .NET Framework Remote Code Execution Vulnerability
Executive Summary
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Overview
7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.8
EPSS Score
No EPSS score available for this CVE.
View on FIRST.orgAffected Products
59 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| .NET 8.0 installed on Windows | 5104032 (Security Update) |
Important | Remote Code Execution | Maybe |
| .NET 9.0 installed on Windows | 5104033 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for 32-bit Systems | 5087537 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for x64-based Systems | 5087537 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | 5087061 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems | 5087061 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | 5087061 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 | 5087537 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 (Server Core installation) | 5087537 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | 5087061 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | 5087061 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | 5087066 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for ARM64-based Systems | 5087066 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | 5087066 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems | 5087064 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems | 5087064 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems | 5087064 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems | 5087064 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems | 5087064 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems | 5087064 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | 5087066 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | 5087066 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 | 5087068 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation) | 5087068 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems | 5087053 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems | 5087053 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for x64-based Systems | 5087053 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for 32-bit Systems | 5087053 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems | 5087053 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for x64-based Systems | 5087053 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for ARM64-based Systems | 5087058 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for x64-based Systems | 5087058 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for ARM64-based Systems | 5092430 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for x64-based Systems | 5092430 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for ARM64-based Systems | 5092427 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for x64-based Systems | 5092427 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 26H1 for ARM64-based Systems 5087077 (Security Update) 5092431 (Security Update) Important Remote Code Execution Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 2.0.50727.9182 & 3.0.30729.9168 4.8.9340.0 Maybe None Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 26H1 for x64-based Systems 5087077 (Security Update) 5092431 (Security Update) Important Remote Code Execution Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 2.0.50727.9182 & 3.0.30729.9168 4.8.9340.0 Maybe None Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 | 5087059 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 (Server Core installation) | 5087059 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 | 5087057 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 (Server Core installation) | 5087057 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 | 5087048 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | 5087048 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | 5087049 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | 5087049 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | 5087062 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) | 5087062 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | 5087063 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) | 5087063 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems | 5087065 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | 5087065 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 | 5087067 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | 5087067 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | 5087069 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | 5087069 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2016 | 5087065 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation) | 5087065 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Visual Studio 2022 version 17.12 | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Visual Studio 2022 version 17.14 | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Visual Studio 2026 version 18.7 | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
Patches
21 patches
| Article | Type | Restart |
|---|---|---|
5104032 |
Security Update | Maybe |
5104033 |
Security Update | Maybe |
5087537 |
Security Update | Maybe |
5087061 |
Security Update | Maybe |
5087066 |
Security Update | Maybe |
5087064 |
Security Update | Maybe |
5087068 |
Security Update | Maybe |
5087053 |
Security Update | Maybe |
5087058 |
Security Update | Maybe |
5092430 |
Security Update | Maybe |
5092427 |
Security Update | Maybe |
5087059 |
Security Update | Maybe |
5087057 |
Security Update | Maybe |
5087048 |
Security Update | Maybe |
5087049 |
Security Update | Maybe |
5087062 |
Security Update | Maybe |
5087063 |
Security Update | Maybe |
5087065 |
Security Update | Maybe |
5087067 |
Security Update | Maybe |
5087069 |
Security Update | Maybe |
Release Notes |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Ky0toFu, 41ae55e9310ff27fa6f26af4727e5590, Kevin Gosse
References
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