# CVE-2026-82781

## Summary

- **CVE ID:** CVE-2026-82781
- **Severity:** MEDIUM
- **CVSS Score:** 5.4 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N)
- **CWE:** CWE-79
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 14, 2026

## Description

Cross-site scripting vulnerability exists in CONPROSYS nano Series. If this vulnerability is exploited, an arbitrary script may be executed on a logged-in user's web browser.

## Affected Products

- Contec Co., Ltd. — Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* (0)
- Contec Co., Ltd. — Remote I/O Coupler Unit (EtherNet/IP Adapter) CPSN-EOB471EI-[]1 (0)
- Contec Co., Ltd. — Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041 (0)

## References

- [CNA](https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf)
- [CNA](https://jvn.jp/en/vu/JVNVU96551518/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.14%
- **EPSS Percentile:** 3.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._