CVE-2025-26682: ASP.NET Core and Visual Studio Denial of Service Vulnerability

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2025-Apr

Released

2025-04-08

EPSS Score

47.03% (percentile: 97.7%)

Description

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Affected Products (6)

Developer Tools

• ASP.NET Core 8.0
• Microsoft Visual Studio 2022 version 17.12
• Microsoft Visual Studio 2022 version 17.13
• Microsoft Visual Studio 2022 version 17.8
• Microsoft Visual Studio 2022 version 17.10
• ASP.NET Core 9.0

Security Updates (6)

• Release Notes
• Release Notes
• Release Notes
• Release Notes
• Release Notes
• Release Notes

Acknowledgments

James Newton-King with Microsoft, James Newton-King with Microsoft

Revision History

• 2025-04-08: Information published.