# CVE-2026-69304

## Summary

- **CVE ID:** CVE-2026-69304
- **Severity:** MEDIUM
- **CVSS Score:** 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)
- **CWE:** CWE-409
- **Published:** Sep 8, 2026
- **Last Modified:** Sep 11, 2026

## Description

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

## Affected Products

- 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)

## References

- [CNA](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69304)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.77%
- **EPSS Percentile:** 53.4

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._