# CVE-2026-82773

## Summary

- **CVE ID:** CVE-2026-82773
- **Severity:** MEDIUM
- **CVSS Score:** 6.1 (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 M2M Gateway Series and CONPROSYS M2M Controller 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. — M2M Gateway Integrated Type CPS-MG341* (0)
- Contec Co., Ltd. — M2M Gateway Configurable type CPS-MGS341* (0)
- Contec Co., Ltd. — M2M Controller Integrated Type CPS-MC341 (0)
- Contec Co., Ltd. — M2M Controller Configurable type CPS-MCS341* (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:** 0.19%
- **EPSS Percentile:** 8.6

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