VDB
CVE-2026-69304
CVE-2026-69304
PUBLISHED
CVSS 5.9 MEDIUM
Reported by microsoft · Published September 8, 2026
Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Risk Scores
CVSS 3.1
5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | .NET 10.0 | 10.0.0 |
| Microsoft | .NET 8.0 | 8.0.0 |
| Microsoft | .NET 9.0 | 9.0.0 |
| Microsoft | ASP.NET Core 10.0 | 10.0 |
| Microsoft | ASP.NET Core 11.0 | 11.0 |
| Microsoft | ASP.NET Core 8.0 | 8.0 |
| Microsoft | ASP.NET Core 9.0 | 9.0 |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 |
| Microsoft | Microsoft Visual Studio 2026 version 18.9 | 18.9.0 |
| microsoft | .net | 8.0.0, 10.0.0, 9.0.0 |
| Microsoft | .NET 8.0 | 8.0.0 |
| microsoft | asp.net_core | 10.0, 8.0, 11.0 |
| Microsoft | .NET 9.0 | 9.0.0 |
| Microsoft | ASP.NET Core 11.0 | 11.0 |
| Microsoft | ASP.NET Core 9.0 | 9.0 |
| Microsoft | ASP.NET Core 10.0 | 10.0 |
| Microsoft | .NET 10.0 | 10.0.0 |
| microsoft | visual_studio_2026 | 18.9.0 |
| Microsoft | Microsoft Visual Studio 2026 version 18.9 | 18.9.0 |
| microsoft | visual_studio_2022 | 17.14.0 |
…and 2 more
Timeline
- Sep 8, 2026 CVE Published
- Sep 8, 2026 CVE Updated
- Sep 9, 2026 Coalition ESS Score
- Sep 9, 2026 Security Advisory
References
- ASP.NET Core Denial of Service Vulnerability vendor-advisorypatch