Missing authentication for critical function vulnerability exists in Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*. An attacker may execute a REST API without authentication, which could allow the attacker to retrieve I/O values and/or control the output.
History

Thu, 17 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Contec
Contec remote I/o Coupler Unit (server Type) Cpsn-mcb271-*
Vendors & Products Contec
Contec remote I/o Coupler Unit (server Type) Cpsn-mcb271-*

Tue, 15 Sep 2026 16:00:00 +0000

Type Values Removed Values Added
Title Missing Authentication in REST API Enables Remote Read/Control of I/O Coupler

Mon, 14 Sep 2026 22:30:00 +0000

Type Values Removed Values Added
Title Missing Authentication in REST API Enables Remote Read/Control of I/O Coupler

Mon, 14 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 14 Sep 2026 07:00:00 +0000

Type Values Removed Values Added
Description Missing authentication for critical function vulnerability exists in Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*. An attacker may execute a REST API without authentication, which could allow the attacker to retrieve I/O values and/or control the output.
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published: 2026-09-14T06:43:04.368Z

Updated: 2026-09-14T11:19:47.275Z

Reserved: 2026-08-31T02:30:58.278Z

Link: CVE-2026-82784

cve-icon Vulnrichment

Updated: 2026-09-14T11:14:03.073Z

cve-icon NVD

Status : Deferred

Published: 2026-09-14T07:17:20.230

Modified: 2026-09-16T19:27:25.623

Link: CVE-2026-82784

cve-icon Redhat

No data.