CVE-2026-54609highCWE-400CWE-406CWE-770

CVE-2026-54609: high-severity vulnerability in Quiet-Terminal-Interactive QTINeon

QTINeon has unauthenticated relay-to-host amplification via unbounded RECONNECT_REQUEST forwarding

Published

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.6epss 0.5%
QTI Neon is a minimal, game-agnostic, relay-based UDP multiplayer protocol library. In version 1.0.0, the relay's handleReconnectRequest forwards RECONNECT_REQUEST packets to the host without bounding them, so an unauthenticated client can drive relay-to-host amplification and cause a denial of service on the host. No fixed version is available as of this review.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Affected products
Quiet-Terminal-Interactive · QTINeon