CVE-2013-5741: Triplc Nano-10 PLC

High severity, CVSS 7.8. EPSS: 2.2% chance of exploitation in the next 30 days.

Triangle Research International (aka Tri) Nano-10 PLC devices with firmware r81 and earlier do not properly handle large length values in MODBUS data, which allows remote attackers to cause a denial of service (transition to the interrupt state) via a crafted packet to TCP port 502.

Affected products

• Triplc Nano-10 PLC
• Triplc Nano-10 PLC Firmware: up to and including r81; version r80 only

Published 2013-10-29. Last modified 2026-06-16.