What is CVE-2026-42899?

CVE-2026-42899 is a security advisory published by Microsoft Security Response Center (MSRC) with Denial of Service severity. ASP.NET Core Denial of Service Vulnerability

Which CVE IDs does CVE-2026-42899 cover?

CVE-2026-42899 covers the following CVE IDs: CVE-2026-42899. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-42899?

CVE-2026-42899 has a CVSS v3 base score of 7.5, published by Microsoft Security Response Center (MSRC).

CVE-2026-42899Denial of ServiceCVSS 7.5

ASP.NET Core Denial of Service Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 22, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-42899 →

📋 Description

<p>Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.</p>