CVE-2026-10831Improper Authorization of Break Signal Commands in Devices

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://www.moxa.com/en/support/product-support/security-advisory/mpsa-262370-cve-2026-10831-improper-authori… vendor-advisory