Description
A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core or .NET Framework web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Core or .NET Framework application. The update addresses the vulnerability by correcting how the .NET Core or .NET Framework web application handles web requests.
Affected products
microsoft: .net; microsoft: .net core; microsoft: .net framework; microsoft: windows server 2008; microsoft: windows 8.1; microsoft: windows server 2012; microsoft: windows 10; microsoft: windows server 2016; microsoft: windows server 2019; microsoft: windows 7; microsoft: windows rt 8.1; microsoft: visual studio 2017; microsoft: visual studio 2019; microsoft: powershell; microsoft: powershell core
References2
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 6% percentile: 94 · as of 11 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.