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

CVE-2026-10831

Improper Authorization of Break Signal Commands in Devices PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Moxa / NPort 6000 Series	affected 1.0 through 2.3
Moxa / CN2600 Series	affected 1.0 through 4.6

CWE

CWE-862

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.