CVE-2026-25667
High · 7.5CVSS
7.5
EPSS
4.3%
Published
Mar 19, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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