A denial-of-service vulnerability exists in NPort devices because of improper access control on the command port. The command interface does not properly validate whether a sender is associated with a valid data port session before accepting break signal commands. A remote attacker with network access can send crafted requests to disrupt serial communication for an active user session.

Project Subscriptions

Vendors Products
Cn2600 Series Subscribe
Nport 5600 Series Subscribe
Advisories

No advisories yet.

Fixes

Solution

Please refer to the security advisory: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-262370-cve-2026-10831-improper-authorization-vulnerability-in-serial-device-servers


Workaround

No workaround given by the vendor.

History

Fri, 26 Jun 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Moxa
Moxa cn2600 Series
Moxa nport 5600 Series
Vendors & Products Moxa
Moxa cn2600 Series
Moxa nport 5600 Series

Tue, 16 Jun 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 16 Jun 2026 15:00:00 +0000

Type Values Removed Values Added
Description A denial-of-service vulnerability exists in NPort devices because of improper access control on the command port. The command interface does not properly validate whether a sender is associated with a valid data port session before accepting break signal commands. A remote attacker with network access can send crafted requests to disrupt serial communication for an active user session.
Title Improper Authorization of Break Signal Commands in Devices
Weaknesses CWE-862
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:L'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Moxa

Published:

Updated: 2026-06-16T15:27:28.093Z

Reserved: 2026-06-04T10:11:26.724Z

Link: CVE-2026-10831

cve-icon Vulnrichment

Updated: 2026-06-16T15:27:24.699Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-16T15:16:34.490

Modified: 2026-06-16T15:36:54.090

Link: CVE-2026-10831

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-26T09:45:28Z

Weaknesses