CVE-2026-54609
HighCVSS 8.6Exploitation Probability (EPSS)
Low risk39th percentile - higher than 39% of all known CVEs
Summary
QTI Neon version 1.0.0 has a vulnerability in the relay's handleReconnectRequest function that forwards RECONNECT_REQUEST packets to the host without bounding them. An unauthenticated client can cause relay-to-host amplification, leading to denial of service (DoS) on the host. No fixed version is available.
Risk Assessment
An attacker can cause host overload through amplified traffic, leading to denial of service and preventing normal application operation.
Recommendation
Monitor for vendor patches and temporarily restrict relay access or apply firewall rules to limit RECONNECT_REQUEST packets.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

