Oct 2026: .NET Denial of Service Vulnerability
CVE-2026-84008 Published on October 13, 2026
.NET Denial of Service Vulnerability
Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
Weakness Type
Inefficient Algorithmic Complexity
An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.
Products Associated with CVE-2026-84008
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Affected Versions
Microsoft .NET Framework 3.5:- Version 3.5.0 and below 2.0.50727.9188 AND 3.0.30729.9171 is affected.
- Version 3.0.0.0 and below 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0 is affected.
- Version 4.7.0 and below 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0 is affected.
- Version 4.8.0 and below 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0 is affected.
- Version 4.8.1 and below 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0 is affected.
- Version 4.7.0 and below 4.7.4150.0 is affected.
- Version 4.8.0 and below 4.8.4811.0 is affected.
- Version 4.8.0.0 and below 4.8.9363.0 is affected.
- Version 17.14.0 and below 17.14.42 is affected.
- Version 18.10.0 and below 18.10.4 is affected.
- Version 10.0.0 and below 10.0.13 is affected.