Microsoft Security Response CenterCVE-2026-42899

ASP.NET Core Denial of Service Vulnerability

HighVendor CVSS 7.5 / 10 1 CVE Published May 12, 2026 at 7:00 AM UTC

Summary

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

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Install KB5093447. Install KB5093448. Install KB5093446.

May 12, 2026 at 7:00 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 27, 2026 at 11:11 PM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Nov 7, 2026 at 7:05 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Details collected from Microsoft Security Response Center.

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