7.5High

CVE-2026-84008.NET Denial of Service Vulnerability

Microsoft Microsoft .NET Framework 3.5; Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2; Microsoft Microsoft .NET Framework 3.5 AND 4.7.2; Mic… Published: (1 month ago)

Description

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.

Weakness (CWE): CWE-407

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
Microsoft Microsoft .NET Framework 3.5 3.5.0 – < 2.0.50727.9188 AND 3.0.30729.9171
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 3.0.0.0 – < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 4.7.0 – < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
Microsoft Microsoft .NET Framework 3.5 AND 4.8 4.8.0 – < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0
Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 4.8.1 – < 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.0 – < 4.7.4150.0
Microsoft Microsoft .NET Framework 4.8 4.8.0 – < 4.8.4811.0
Microsoft Microsoft .NET Framework 4.8.1 4.8.0.0 – < 4.8.9363.0
Microsoft Microsoft Visual Studio 2022 version 17.14 17.14.0 – < 17.14.42
Microsoft Microsoft Visual Studio 2026 version 18.10 18.10.0 – < 18.10.4
microsoft .net 3.5.0 – < 2.0.50727.9188 AND 3.0.30729.9171
microsoft .net framework 3.0.0.0 – < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
Microsoft System.Security.Cryptography.Pkcs 10.0.0 – < 10.0.13
microsoft visual studio 2022 17.14.0 – < 17.14.42

Ubuntu fixes

  • USN-8942-1 .NET vulnerabilities Ubuntu 26.10, 26.04, 24.04, 22.04 · 20.10.2026 · dotnet10, dotnet11, dotnet8

References and patches