CVE-2026-94450: s2n-quic 0 through 1.88.0

CVE-2026-94450. CVSS 3.1 base score 7.5 (HIGH, Source advisory). EPSS 0.01944 (percentile 0.79878), scored 20-Oct-2026.

Affected technology

s2n-quic · 0 through 1.88.0
AWS

Description’s affected range: 1.88.0 and earlier may

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

An unauthenticated remote user may cause a denial of service by shutting down a server endpoint via a single crafted UDP datagram. Source advisory’s CVSS 4.0 assessment (base score 8.7/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 20-Oct-2026 21:22 UTC

CWE: CWE-617, CWE-1284
CCR priority: 30.5 /100 (P4)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Source advisory
EPSS: 0.01944 · percentile 0.79878 · 2026-10-20
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-20 21:22:07.084487+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-94450.html