ASP.NET Core Kestrel in Microsoft .NET 8.0 before 8.0.22 and .NET 9.0 before 9.0.11 allows a remote attacker to cause excessive CPU consumption by sending a crafted QUIC packet, because of an incorrect exit condition for HTTP/3 Encoder/Decoder stream processing.

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Fixes

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History

Fri, 20 Mar 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft aspnetcore
Vendors & Products Microsoft
Microsoft aspnetcore

Thu, 19 Mar 2026 18:45:00 +0000

Type Values Removed Values Added
Description ASP.NET Core Kestrel in Microsoft .NET 8.0 before 8.0.22 and .NET 9.0 before 9.0.11 allows a remote attacker to cause excessive CPU consumption by sending a crafted QUIC packet, because of an incorrect exit condition for HTTP/3 Encoder/Decoder stream processing.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-03-19T18:10:55.738Z

Reserved: 2026-02-04T00:00:00.000Z

Link: CVE-2026-25667

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-19T19:16:19.880

Modified: 2026-03-19T19:16:19.880

Link: CVE-2026-25667

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-20T08:58:01Z

Weaknesses

No weakness.