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.
Published: 2026-03-19
Score: 7.5 High
EPSS: 3.1% Low
KEV: No
AI Analysis

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Remediation

No solution or workaround provided in the CVE record.

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Tracking

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Advisories

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History

Sun, 25 Oct 2026 21:30:00 +0100

Type Values Removed Values Added
Title Denial of Service via crafted QUIC packet in ASP.NET Core Kestrel

Thu, 24 Sep 2026 21:45:00 +0200

Type Values Removed Values Added
Title Remote Denial of Service via Crafted QUIC Packet in ASP.NET Core Kestrel

Thu, 18 Jun 2026 18:45:00 +0200

Type Values Removed Values Added
Title Remote Denial of Service via Crafted QUIC Packet in ASP.NET Core Kestrel

Wed, 17 Jun 2026 07:45:00 +0200

Type Values Removed Values Added
Title Remote Denial of Service Due to Improper QUIC Exit Condition in ASP.NET Core Kestrel

Tue, 16 Jun 2026 13:15:00 +0200

Type Values Removed Values Added
Title Remote Denial of Service Due to Improper QUIC Exit Condition in ASP.NET Core Kestrel

Fri, 22 May 2026 18:00:00 +0200

Type Values Removed Values Added
Title Remote DoS via Crafted QUIC Packet in ASP.NET Core Kestrel

Fri, 01 May 2026 08:00:00 +0200

Type Values Removed Values Added
Title Remote DoS via Crafted QUIC Packet in ASP.NET Core Kestrel

Wed, 22 Apr 2026 19:15:00 +0200

Type Values Removed Values Added
References

Wed, 15 Apr 2026 19:00:00 +0200

Type Values Removed Values Added
Title Denial of Service via Crafted QUIC Packet in ASP.NET Core Kestrel

Tue, 14 Apr 2026 23:00:00 +0200

Type Values Removed Values Added
First Time appeared Microsoft .net
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
Vendors & Products Microsoft .net

Wed, 25 Mar 2026 13:00:00 +0100

Type Values Removed Values Added
Title Denial of Service via Crafted QUIC Packet in ASP.NET Core Kestrel

Tue, 24 Mar 2026 03:30:00 +0100

Type Values Removed Values Added
Weaknesses CWE-400
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 20 Mar 2026 10:00:00 +0100

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

Thu, 19 Mar 2026 19:45:00 +0100

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.
References

Subscriptions

Microsoft .net Aspnetcore
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-29T14:34:11.558Z

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

Link: CVE-2026-25667

cve-icon Vulnrichment

Updated: 2026-03-24T01:32:53.058Z

cve-icon NVD

Status : Modified

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

Modified: 2026-06-17T10:25:02.180

Link: CVE-2026-25667

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-25T18:45:15Z

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption