.NET Framework
CVE-2024-21312 — .NET Framework Denial of Service Vulnerability
Executive Summary
None
Overview
7.5
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
None
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.7
EPSS Score
0.03578
probability of exploitation in the next 30 days
0.87901 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
55 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for 32-bit Systems | 5034119 (Security Update) |
Important | Denial of Service | Yes |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for x64-based Systems | 5034119 (Security Update) |
Important | Denial of Service | Yes |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | 5034273 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems | 5034273 (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 | 5034273 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 | 5034119 (Security Update) |
Important | Denial of Service | Yes |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 (Server Core installation) | 5034119 (Security Update) |
Important | Denial of Service | Yes |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | 5034273 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | 5034273 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | 5034273 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | 5034273 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems | 5034274 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems | 5034274 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems | 5034274 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems | 5034275 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems | 5034275 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems | 5034275 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 11 version 21H2 for ARM64-based Systems | 5034276 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 11 version 21H2 for x64-based Systems | 5034276 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | 5034273 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | 5034273 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 | 5034272 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation) | 5034272 (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 | 5034274 (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 | 5034274 (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 | 5034274 (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 | 5034275 (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 | 5034275 (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 | 5034275 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 21H2 for ARM64-based Systems | 5034276 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 21H2 for x64-based Systems | 5034276 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 22H2 for ARM64-based Systems | 5033920 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 22H2 for x64-based Systems | 5033920 (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 | 5033920 (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 | 5033920 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 | 5034272 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 (Server Core installation) | 5034272 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 | 5034278 (Monthly Rollup) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | 5034278 (Monthly Rollup) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | 5034279 (Monthly Rollup) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | 5034279 (Monthly Rollup) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | 5034269 (Security Only) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | 5034269 (Security Only) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | 5034278 (Monthly Rollup) |
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) | 5034278 (Monthly Rollup) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | 5034279 (Monthly Rollup) |
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) | 5034279 (Monthly Rollup) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems | 5033910 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | 5033910 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 | 5034278 (Monthly Rollup) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | 5034278 (Monthly Rollup) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | 5034279 (Monthly Rollup) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | 5034279 (Monthly Rollup) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2016 | 5033910 (Security Update) |
Important | Denial of Service | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation) | 5033910 (Security Update) |
Important | Denial of Service | Maybe |
Patches
11 patches
| Article | Type | Restart |
|---|---|---|
5034119 |
Security Update | Yes |
5034273 |
Security Update | Maybe |
5034274 |
Security Update | Maybe |
5034275 |
Security Update | Maybe |
5034276 |
Security Update | Maybe |
5034272 |
Security Update | Maybe |
5033920 |
Security Update | Maybe |
5034278 |
Monthly Rollup | Maybe |
5034279 |
Monthly Rollup | Maybe |
5034269 |
Security Only | Maybe |
5033910 |
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
Karel Rymes
References
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