CVE-2026-33116: .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
Noroxi assessment
Priority: Monitor (action score 31/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 2.1% (FIRST EPSS); higher than 82.1% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- According to CISA the attack is automatable: targets can be found by mass scanning.
- Fixed version: .NET 10.0 installed on Linux 10.0.6; .NET 10.0 installed on Mac OS 10.0.6; .NET 8.0 8.0.26.
Low priority for now. Upgrade to .NET 10.0 installed on Linux 10.0.6; .NET 10.0 installed on Mac OS 10.0.6; .NET 8.0 8.0.26 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network.
- BDU:2026-05660
- GHSA-37gx-xxp4-5rgx
- ALSA-2026:8468
- ALSA-2026:8469
- ALSA-2026:8470
- ALSA-2026:8472
- ALSA-2026:8473
- ALSA-2026:8475
- RHSA-2026:13280
- RHSA-2026:13281
- RHSA-2026:13282
- RHSA-2026:13283
- RHSA-2026:13693
- RHSA-2026:8467
- RHSA-2026:8468
- RHSA-2026:8469
- RHSA-2026:8470
- RHSA-2026:8471
- RHSA-2026:8472
- RHSA-2026:8473
- Published
- Apr 14, 2026
- Updated
- Oct 15, 2026
- EPSS
- 2.1% · 82th percentile
- CWE
- CWE-20
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.1%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · microsoft
- 7.5
- NVD has not scored this yet; the score shown is the CNA’s.
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
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| microsoft | .net | cpe:2.3:a:microsoft:.net |
| microsoft | windows | cpe:2.3:o:microsoft:windows |
| microsoft | .net framework | cpe:2.3:a:microsoft:.net_framework |
| microsoft | windows server 2012 | cpe:2.3:o:microsoft:windows_server_2012 |
| microsoft | windows 10 1809 | cpe:2.3:o:microsoft:windows_10_1809 |
| microsoft | windows 10 21h2 | cpe:2.3:o:microsoft:windows_10_21h2 |
| microsoft | windows 10 22h2 | cpe:2.3:o:microsoft:windows_10_22h2 |
| microsoft | windows server 2022 | cpe:2.3:o:microsoft:windows_server_2022 |
| microsoft | windows 11 22h2 | cpe:2.3:o:microsoft:windows_11_22h2 |
| microsoft | windows 11 23h2 | cpe:2.3:o:microsoft:windows_11_23h2 |
| microsoft | windows 11 24h2 | cpe:2.3:o:microsoft:windows_11_24h2 |
| microsoft | windows 11 25h2 | cpe:2.3:o:microsoft:windows_11_25h2 |
and 6 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- microsoft .net10.0.0 and later · before 10.0.6
- microsoft .net8.0.0 and later · before 8.0.26
- microsoft .net9.0.0 and later · before 9.0.15
- microsoft .net framework3.5
- microsoft .net framework4.6.2
- microsoft .net framework4.7
- microsoft .net framework4.7.1
- microsoft .net framework4.7.2
- microsoft .net framework4.8
- microsoft .net framework4.8.1
Versions reported by the vendor
Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.
Microsoft .NET 10.0
- 10.0.0 and later · before 10.0.6affected
Microsoft .NET 8.0
- 8.0 and later · before 8.0.26affected
- 8.0.0 and later · before 8.0.26affected
Microsoft .NET 9.0
- 9.0.0 and later · before 9.0.15affected
Microsoft Microsoft .NET Framework 3.5
- 3.5.0 and later · before 2.0.50727.8982 & 3.0.30729.8976affected
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2
- 4.7.0 and later · before 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0affected
Microsoft Microsoft .NET Framework 3.5 AND 4.8
- 4.8.0 and later · before 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0affected
Microsoft Microsoft .NET Framework 3.5 AND 4.8.1
- 4.8.1 and later · before 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0affected
Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2
- 4.7.0 and later · before 4.8.4801.0affected
Microsoft Microsoft .NET Framework 4.8
- 4.8.0 and later · before 4.8.4801.0affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:10 | aspnetcore-runtime-8.0 | before 8.0.26-1.el10_1 | 8.0.26-1.el10_1 |
| AlmaLinux:10 | aspnetcore-runtime-9.0 | before 9.0.15-1.el10_1 | 9.0.15-1.el10_1 |
| AlmaLinux:10 | aspnetcore-runtime-dbg-8.0 | before 8.0.26-1.el10_1 | 8.0.26-1.el10_1 |
| AlmaLinux:10 | aspnetcore-runtime-dbg-9.0 | before 9.0.15-1.el10_1 | 9.0.15-1.el10_1 |
| AlmaLinux:10 | aspnetcore-targeting-pack-8.0 | before 8.0.26-1.el10_1 | 8.0.26-1.el10_1 |
| AlmaLinux:10 | aspnetcore-targeting-pack-9.0 | before 9.0.15-1.el10_1 | 9.0.15-1.el10_1 |
| AlmaLinux:10 | dotnet-apphost-pack-8.0 | before 8.0.26-1.el10_1 | 8.0.26-1.el10_1 |
| AlmaLinux:10 | dotnet-apphost-pack-9.0 | before 9.0.15-1.el10_1 | 9.0.15-1.el10_1 |
| AlmaLinux:10 | dotnet-hostfxr-8.0 | before 8.0.26-1.el10_1 | 8.0.26-1.el10_1 |
| AlmaLinux:10 | dotnet-hostfxr-9.0 | before 9.0.15-1.el10_1 | 9.0.15-1.el10_1 |
| AlmaLinux:10 | dotnet-runtime-8.0 | before 8.0.26-1.el10_1 | 8.0.26-1.el10_1 |
| AlmaLinux:10 | dotnet-runtime-9.0 | before 9.0.15-1.el10_1 | 9.0.15-1.el10_1 |
| AlmaLinux:10 | dotnet-runtime-dbg-8.0 | before 8.0.26-1.el10_1 | 8.0.26-1.el10_1 |
| AlmaLinux:10 | dotnet-runtime-dbg-9.0 | before 9.0.15-1.el10_1 | 9.0.15-1.el10_1 |
| AlmaLinux:10 | dotnet-sdk-8.0 | before 8.0.126-1.el10_1 | 8.0.126-1.el10_1 |
| AlmaLinux:10 | dotnet-sdk-8.0-source-built-artifacts | before 8.0.126-1.el10_1 | 8.0.126-1.el10_1 |
| AlmaLinux:10 | dotnet-sdk-9.0 | before 9.0.116-1.el10_1 | 9.0.116-1.el10_1 |
| AlmaLinux:10 | dotnet-sdk-9.0-source-built-artifacts | before 9.0.116-1.el10_1 | 9.0.116-1.el10_1 |
| AlmaLinux:10 | dotnet-sdk-aot-9.0 | before 9.0.116-1.el10_1 | 9.0.116-1.el10_1 |
| AlmaLinux:10 | dotnet-sdk-dbg-8.0 | before 8.0.126-1.el10_1 | 8.0.126-1.el10_1 |
| AlmaLinux:10 | dotnet-sdk-dbg-9.0 | before 9.0.116-1.el10_1 | 9.0.116-1.el10_1 |
| AlmaLinux:10 | dotnet-targeting-pack-8.0 | before 8.0.26-1.el10_1 | 8.0.26-1.el10_1 |
| AlmaLinux:10 | dotnet-targeting-pack-9.0 | before 9.0.15-1.el10_1 | 9.0.15-1.el10_1 |
| AlmaLinux:10 | dotnet-templates-8.0 | before 8.0.126-1.el10_1 | 8.0.126-1.el10_1 |
+96
Same product
microsoft: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-38180.NET and Visual Studio Denial of Service VulnerabilityKEV64This week
- CVE-2023-38171Microsoft QUIC Denial of Service Vulnerability51Plan
- CVE-2021-26701.NET Core Remote Code Execution Vulnerability41Plan
Published before and after this one in the same product
- ← EarlierCVE-2026-26131Mar 10, 2026 · .NET Elevation of Privilege Vulnerability31Monitor
- ← EarlierCVE-2026-25667Mar 19, 2026 · ASP.NET Core Kestrel in Microsoft .NET 8.0 before 8.0.22 and .NET 9.0 before 9.0.11 allows a remote attacker to cause excessive CPU consumpt31Monitor
- Later →CVE-2026-26171Apr 14, 2026 · .NET Denial of Service Vulnerability31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| .NET 10.0 installed on Linux | 10.0.6 · KB5086095 | Microsoft (MSRC) |
| .NET 10.0 installed on Mac OS | 10.0.6 · KB5086095 | Microsoft (MSRC) |
| .NET 8.0 | 8.0.26 · KB5086096 | Microsoft (MSRC) |
| .NET 8.0 installed on Linux | 8.0.26 · KB5086096 | Microsoft (MSRC) |
| .NET 8.0 installed on Mac OS | 8.0.26 · KB5086096 | Microsoft (MSRC) |
| .NET 8.0 installed on Windows | 8.0.26 · KB5086096 | Microsoft (MSRC) |
| .NET 9.0 installed on Linux | 9.0.15 · KB5086097 | Microsoft (MSRC) |
| .NET 9.0 installed on Mac OS | 9.0.15 · KB5086097 | Microsoft (MSRC) |
| .NET 9.0 installed on Windows | 9.0.15 · KB5086097 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 · KB5082413 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems | 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 · KB5082413 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 · KB5082413 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 · KB5082414 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for ARM64-based Systems | 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 · KB5082414 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 · KB5082414 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 · KB5082426 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 · KB5082426 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 · KB5082426 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 · KB5082426 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 · KB5082426 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 · KB5082426 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 · KB5082427 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation) | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0 · KB5082427 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · KB5082419 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · KB5082419 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for x64-based Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · KB5082419 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for 32-bit Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · KB5082419 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · KB5082419 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for x64-based Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · KB5082419 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 22H2 for ARM64-based Systems | 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 · KB5082424 | Microsoft (MSRC) |
+61
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-322030 days apart.NET and Visual Studio Denial of Service Vulnerability31Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- access.redhat.com/errata/RHSA-2026:13280
- access.redhat.com/errata/RHSA-2026:13281
- access.redhat.com/errata/RHSA-2026:13282
- access.redhat.com/errata/RHSA-2026:13283
- access.redhat.com/errata/RHSA-2026:13693
- access.redhat.com/errata/RHSA-2026:8467
- access.redhat.com/errata/RHSA-2026:8468
- access.redhat.com/errata/RHSA-2026:8469
- access.redhat.com/errata/RHSA-2026:8470
- access.redhat.com/errata/RHSA-2026:8471
- access.redhat.com/errata/RHSA-2026:8472
- access.redhat.com/errata/RHSA-2026:8473
- access.redhat.com/errata/RHSA-2026:8474
- access.redhat.com/errata/RHSA-2026:8475
- access.redhat.com/errata/RHSA-2026:9077
- access.redhat.com/errata/RHSA-2026:9080
- access.redhat.com/errata/RHSA-2026:9205
- access.redhat.com/security/cve/CVE-2026-33116
- bugzilla.redhat.com/show_bug.cgi?id=2457741
Vendor advisories and official records. Exploit/PoC links are deliberately left out.