CVE-2026-82783: Contec Co., Ltd Programmable Remote I/o Coupler Unit Software PLC Type Cpsn-PCB271-s1-041

Medium severity, CVSS 4.2. EPSS: 0.2% chance of exploitation in the next 30 days.

Plaintext storage of a password issue exists in CONPROSYS nano Series . If this vulnerability is exploited, an attacker with physical access to the product may obtain credentials.

Affected products

• Contec Co., Ltd Programmable Remote I/o Coupler Unit Software PLC Type Cpsn-PCB271-s1-041: before 1.61 (fixed in 1.61)
• Contec Co., Ltd Remote I/o Coupler Unit Ethernet/ip Adapter Cpsn-EOB471EI-1: before 1.02 (fixed in 1.02)
• Contec Co., Ltd Remote I/o Coupler Unit Server Type Cpsn-MCB271-*: before 1.82 (fixed in 1.82)

Published 2026-09-14. Last modified 2026-09-16.