CVE-2026-25667

PoC —

CVSS 3.1

7.5 high

EPSS

3%p87

Published

Mar 19, 2026 (Mar 19, 2026)

Modified

Jun 17, 2026

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.

Vendors: microsoft
Products: .net
Weakness: CWE-400
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (3.0%)

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