CVE-2026-82784CWE-306

CVE-2026-82784

Medium · published September 14, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
26.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
6.9 · 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
EPSS
0.00341 · 26.4th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-09-14T11:17Z
References (2)
https://jvn.jp/en/vu/JVNVU96551518/ · [email protected]https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf · [email protected]
EPSS history
Timeline
  • 15 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 14 SEP 06:43Z
    Missing authentication for critical function vulnerability exists in Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*
    cvelistv5