---
id: CVE-2026-10825
title: Improper JSON Input Validation in WebSocket API Leads to Denial of Service
summary: >-
  A denial-of-service vulnerability exists in the WebSocket API due to
  insufficient validation and handling of JSON-based requests. A low-privileged
  authenticated attacker can send a specially crafted request that causes
  service disruption…
severity: high
cvss: 7.1
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-1287
vendor: Moxa
product: NPort 6000-G2 Series
affected:
  - nport_6000-g2_series >= 1.0 <= 1.1.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-16T12:24:31.669564Z'
published: '2026-06-16'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T06:13:26.343Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-10825'
references:
  - url: >-
      https://www.moxa.com/en/support/product-support/security-advisory/mpsa-268270-cve-2026-10825-improper-validation-of-input-vulnerability-in-serial-device-servers
tags:
  - cve.org
epss: 0.0024
epssPercentile: 0.15166
ingestedAt: '2026-11-05T19:30:42.627Z'
---

## Overview

A denial-of-service vulnerability exists in the WebSocket API due to insufficient validation and handling of JSON-based requests. A low-privileged authenticated attacker can send a specially crafted request that causes service disruption and may result in an unexpected device reboot.

## Affected

- `nport_6000-g2_series >= 1.0 <= 1.1.0`

## Remediation

Please refer to the security advisory: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-268270-cve-2026-10825-improper-validation-of-input-vulnerability-in-serial-device-servers