CVE-2026-69304
Analyzed
Analyzed - Analysis Complete
ASP.NET Core Data Amplification DoS Vulnerability
Vulnerability report for CVE-2026-69304, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-08
Last updated on: 2026-09-30
Assigner: Microsoft Corporation
Description
Description
Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | asp.net_core | From 10.0.0 (inc) to 10.0.9 (exc) |
| microsoft | asp.net_core | From 8.0.0 (inc) to 8.0.28 (exc) |
| microsoft | asp.net_core | From 9.0.0 (inc) to 9.0.17 (exc) |
| microsoft | visual_studio_2026 | From 18.9.0 (inc) to 18.9.3 (exc) |
| microsoft | visual_studio_2022 | From 17.14.0 (inc) to 17.14.40 (exc) |
| microsoft | asp.net_core | From 11.0.0 (exc) |
| microsoft | asp.net_core | 11.0 |
| microsoft | .net | From 10.0.0 (inc) to 10.0.12 (exc) |
| microsoft | .net | From 8.0.0 (inc) to 8.0.31 (exc) |
| microsoft | .net | From 9.0.0 (inc) to 9.0.20 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-409 | The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output. |
