.NET
CVE-2026-47302 — .NET Denial of Service Vulnerability
Executive Summary
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
Overview
7.5
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
None
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.5
EPSS Score
No EPSS score available for this CVE.
View on FIRST.orgAffected Products
64 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| .NET 10.0 installed on Linux | 5104034 (Security Update) |
Important | Denial of Service | Maybe |
| .NET 10.0 installed on Mac OS | 5104034 (Security Update) |
Important | Denial of Service | Maybe |
| .NET 10.0 installed on Windows | 5104034 (Security Update) |
Important | Denial of Service | Maybe |
| .NET 8.0 installed on Linux | 5104032 (Security Update) |
Important | Denial of Service | Maybe |
| .NET 8.0 installed on Mac OS | 5104032 (Security Update) |
Important | Denial of Service | Maybe |
| .NET 8.0 installed on Windows | 5104032 (Security Update) |
Important | Denial of Service | Maybe |
| .NET 9.0 installed on Linux | 5104033 (Security Update) |
Important | Denial of Service | Maybe |
| .NET 9.0 installed on Mac OS | 5104033 (Security Update) |
Important | Denial of Service | Maybe |
| .NET 9.0 installed on Windows | 5104033 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for 32-bit Systems | 5087537 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for x64-based Systems | 5087537 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | 5087061 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | 5087061 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 | 5087537 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 (Server Core installation) | 5087537 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | 5087061 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | 5087061 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | 5087066 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | 5087066 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems | 5087064 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems | 5087064 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems | 5087064 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems | 5087064 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems | 5087064 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems | 5087064 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | 5087066 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | 5087066 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 | 5087068 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation) | 5087068 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems | 5087053 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems | 5087053 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for x64-based Systems | 5087053 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for 32-bit Systems | 5087053 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems | 5087053 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for x64-based Systems | 5087053 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for ARM64-based Systems | 5087058 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for x64-based Systems | 5087058 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for ARM64-based Systems | 5092430 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for x64-based Systems | 5092430 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for ARM64-based Systems | 5092427 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for x64-based Systems | 5092427 (Security Update) |
Important | Denial of Service | 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 Denial of Service Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 Denial of Service Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 (Server Core installation) | 5087059 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 | 5087057 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 (Server Core installation) | 5087057 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 | 5087048 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | 5087048 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | 5087049 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | 5087049 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | 5087062 (Security Update) |
Important | Denial of Service | 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 | Denial of Service | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | 5087063 (Security Update) |
Important | Denial of Service | 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 | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems | 5087065 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | 5087065 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 | 5087067 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | 5087067 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | 5087069 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | 5087069 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2016 | 5087065 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation) | 5087065 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft Visual Studio 2022 version 17.12 | Release Notes (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft Visual Studio 2022 version 17.14 | Release Notes (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft Visual Studio 2026 version 18.7 | Release Notes (Security Update) |
Important | Denial of Service | Maybe |
Patches
22 patches
| Article | Type | Restart |
|---|---|---|
5104034 |
Security Update | Maybe |
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
Levi Broderick with Microsoft
References
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