What is CVE-2026-82785?

CVE-2026-82785 is a medium-severity vulnerability in Contec Co., Ltd. Remote I/o Coupler Unit (Server Type) Cpsn-Mcb271-*, classified under Stack-based Buffer Overflow. CVSS score: 4.3/10. Published 2026-09-14.

How severe is CVE-2026-82785?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Buffer overflow in Contec Co., Ltd. Remote I/o Coupler Unit (Server Type) Cpsn-Mcb271-*

CVE-2026-82785

Stack-based buffer overflow vulnerability exists in Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*. Receiving a specially crafted request created and sent by a remote attacker may cause a denial-of-service (DoS) condition.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (22.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Contec Co., Ltd. Remote I/o Coupler Unit (Server Type) Cpsn-mcb271-*

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

Frequently asked questions

What is CVE-2026-82785?: CVE-2026-82785 is a medium-severity vulnerability in Contec Co., Ltd. Remote I/o Coupler Unit (Server Type) Cpsn-Mcb271-*, classified under Stack-based Buffer Overflow. CVSS score: 4.3/10. Published 2026-09-14.
How severe is CVE-2026-82785?: Medium severity. CVSS v3 base score is 4.3 out of 10.