5.9Medium

CVE-2026-69304ASP.NET Core Denial of Service Vulnerability

Microsoft .NET 10.0 runtime; Microsoft .NET 8.0 runtime; Microsoft .NET 9.0 runtime; Microsoft ASP.NET Core 10.0 Published: (2 months ago)

Description

Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Weakness (CWE): CWE-409

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

Affected products and versions

VendorProductVersions
microsoft asp.net core 11.0 – < 11.0 RC1
Microsoft ASP.NET Core 10.0 10.0 – < 10.0.12
Microsoft ASP.NET Core 11.0 11.0 – < 11.0 RC1
Microsoft ASP.NET Core 8.0 8.0 – < 8.0.31
Microsoft ASP.NET Core 9.0 9.0 – < 9.0.20
Microsoft Microsoft Visual Studio 2022 version 17.14 17.14.0 – < 17.14.40
Microsoft Microsoft Visual Studio 2026 version 18.9 18.9.0 – < 18.9.3
microsoft .net 10.0.0 – < 10.0.12
Microsoft .NET 10.0 runtime 10.0.0 – < 10.0.12
Microsoft .NET 8.0 runtime 8.0.0 – < 8.0.31
Microsoft .NET 9.0 runtime 9.0.0 – < 9.0.20
microsoft visual studio 2022 17.14.0 – < 17.14.40
microsoft visual studio 2026 18.9.0 – < 18.9.3

References and patches

CPE matches (NVD) (10)

  • cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* ≥ 8.0.0 < 8.0.28
  • cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* ≥ 9.0.0 < 9.0.17
  • cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* ≥ 10.0.0 < 10.0.9
  • cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* ≥ 11.0.0
  • cpe:2.3:a:microsoft:asp.net_core:11.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* ≥ 17.14.0 < 17.14.40
  • cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:* ≥ 18.9.0 < 18.9.3
  • cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 8.0.0 < 8.0.31
  • cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 9.0.0 < 9.0.20
  • cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 10.0.0 < 10.0.12