CVE-2026-10825 PUBLISHED

Improper JSON Input Validation in WebSocket API Leads to Denial of Service

Assigner: Moxa
Reserved: 04.06.2026 Published: 16.06.2026 Updated: 16.06.2026

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.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 7.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	Moxa
Product	NPort 6000-G2 Series
Versions	Default: unaffected affected from 1.0 to 1.1.0 (incl.) Version 1.2.0 is unaffected

Solutions

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

References

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

Problem Types

CWE-1287: Improper Validation of Specified Type of Input CWE

Impacts

CAPEC-28: Fuzzing