CVE-2017-11770: Microsoft Aspnetcore

High severity, CVSS 7.5. EPSS: 5.4% chance of exploitation in the next 30 days.

.NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly parsing certificate data. A denial of service vulnerability exists when .NET Core improperly handles parsing certificate data, aka ".NET CORE Denial Of Service Vulnerability".

Affected products

• Microsoft Aspnetcore: version 1.0 only; version 1.1 only; version 2.0 only

Published 2017-11-15. Last modified 2026-06-17.