CVE-2026-54609Network attack vector

Host service interruption via unbounded reconnect forwarding

Published Jul 28, 2026 · Updated Jul 28, 2026

Network amplification in QTI Neon 1.0.0 allows remote attackers to interrupt the host service through its UDP relay. The NeonRelay reconnect handler forwards every RECONNECT_REQUEST that passes session lookup without deduplicating requests or capping pendingReconnects, while per-source rate limiting assigns each spoofed address a fresh bucket. Exploitation requires a valid session ID and many spoofed source addresses; the bounded consequence is amplified relay traffic against the host.

CVSS severity8.6
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Network amplification in QTI Neon 1.0.0 allows remote attackers to interrupt the host service through its UDP relay. The NeonRelay reconnect handler forwards every RECONNECT_REQUEST that passes session lookup without deduplicating requests or capping pendingReconnects, while per-source rate limiting assigns each spoofed address a fresh bucket. Exploitation requires a valid session ID and many spoofed source addresses; the bounded consequence is amplified relay traffic against the host.

The record

CVE
CVE-2026-54609
Published
Jul 28, 2026
Updated
Jul 28, 2026
Vendor
Quiet Terminal Interactive
Product
QTI Neon
Classifications
CWE-400, CWE-406, CWE-770, T1498.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Quiet Terminal Interactive · QTI Neonversion=1.0.0

Published CVSS scores

8.6GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-406Insufficient Control of Network Message Volume (Network Amplification)
CWE-770Allocation of Resources Without Limits or Throttling
T1498.002Network Denial of Service: Reflection Amplification

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo