CVE-2026-82784Missing authentication for critical function vulnerability exists in Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*.
Updated under an hour ago ()
Does this affect you?
It affects Contec Co., Ltd. Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Weakness (CWE)
- CWE-306
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- jpcert
- NVD analysis
- Deferred
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Contec Co., Ltd. Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* contec:remote_i_o_coupler_unit_server_type_cpsn_mcb271 (from the name) | before 1.82 | CNA record |
References
- https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf
- https://jvn.jp/en/vu/JVNVU96551518/
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.