# CVE-2026-47303

## Summary

- **CVE ID:** CVE-2026-47303
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
- **CWE:** CWE-302, CWE-863, CWE-90
- **Published:** Jul 14, 2026
- **Last Modified:** Sep 9, 2026

## Description

Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges 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 — Microsoft Visual Studio 2022 version 17.12 (17.12.0)
- Microsoft — Microsoft Visual Studio 2022 version 17.14 (17.14.0)
- Microsoft — Microsoft Visual Studio 2026 version 18.7 (18.0)

## References

- [CNA](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47303)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.74%
- **EPSS Percentile:** 52.3

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._