onyx

onyx --cves cve-2026-25667

CVE-2026-25667

HIGHPOC.NET
score
0.3
cvss
7.5
epss
4.3% ▲0.2
published
2026-03-19
kev added
—
first seen

Microsoft .NET ASP.NET Core Kestrel < 8.0.22 and < 9.0.11 contains a denial of service caused by incorrect exit condition in HTTP/3 Encoder/Decoder stream processing, letting remote attackers cause excessive CPU consumption, exploit requires crafted QUIC packet.

Timeline

How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.

events2026-03-19 — PublishedP2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score 0.30.3epss2026-09-22: epss 3.0%2026-09-23: epss 3.0%2026-09-24: epss 4.2%2026-09-25: epss 4.2%2026-09-26: epss 4.2%2026-09-27: epss 4.2%2026-09-29: epss 4.2%2026-09-30: epss 4.2%2026-10-01: epss 4.2%2026-10-02: epss 4.2%2026-10-03: epss 4.2%2026-10-04: epss 4.2%2026-10-05: epss 4.2%2026-10-06: epss 4.2%2026-10-07: epss 4.2%2026-10-08: epss 4.2%2026-10-09: epss 4.2%2026-10-10: epss 4.2%2026-10-11: epss 4.2%2026-10-12: epss 4.2%2026-10-13: epss 4.2%2026-10-14: epss 4.2%2026-10-15: epss 4.2%2026-10-16: epss 4.3%2026-10-18: epss 4.3%2026-10-19: epss 4.3%2026-10-20: epss 4.3%2026-10-21: epss 4.3%4.3%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Tracked by Onyx
  3. Public PoC

Exploit availability

Public PoC flagged by vulnx; no direct exploit link among the citations.

Weaknesses

CWE-400

References 3