Apr 2026: .NET Framework Denial of Service Vulnerability
CVE-2026-23666 Published on April 14, 2026
.NET Framework Denial of Service Vulnerability
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
Weakness Type
Improper Handling of Exceptional Conditions
The software does not handle or incorrectly handles an exceptional condition.
Products Associated with CVE-2026-23666
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Affected Versions
Microsoft .NET Framework 3.5:- Version 3.5.0 and below 2.0.50727.8982 & 3.0.30729.8976 is affected.
- Version 4.7.0 and below 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 is affected.
- Version 4.8.0 and below 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 is affected.
- Version 4.8.1 and below 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 is affected.
- Version 4.7.0 and below 4.8.4801.0 is affected.
- Version 4.8.0 and below 4.8.4801.0 is affected.