Is CVE-2026-94450 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-94450?

CVE-2026-94450 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-94450

Description

Improper validation of the Destination Connection ID length in s2n-quic 1.88.0 and earlier may allow an unauthenticated remote user to cause a denial of service by shutting down a server endpoint via a single crafted UDP datagram. Only server endpoints specifically configured to send Retry packets are affected. To remediate this issue, users should upgrade to version v1.89.0 or later.