Is CVE-2026-82782 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-82782 being exploited in the wild.

How severe is CVE-2026-82782?

Medium severity, with a CVSS score of 4.3, published 14 September 2026.

Which products and versions are affected?

Contec CONPROSYS nano Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041 versions prior to 1.61; Contec CONPROSYS nano Remote I/O Coupler Unit (EtherNet/IP Adapter) CPSN-EOB471EI-[]1 versions prior to 1.02; Contec CONPROSYS nano Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* versions prior to 1.82.

Is there a fix for CVE-2026-82782?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-82782 attacked?

It is attacked over the network.

Am I affected by CVE-2026-82782?

Check whether you run Contec CONPROSYS nano Programmable Remote I/O Coupler Unit (Software PLC Type), Contec CONPROSYS nano Remote I/O Coupler Unit (EtherNet/IP Adapter) or Contec CONPROSYS nano Remote I/O Coupler Unit (Server Type) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-82782: Contec CONPROSYS nano out-of-bounds write in remote I/O coupler

CVE-2026-82782 · Severity: medium · CVSS 4.3 · Published 2026-09-14

Contec CONPROSYS nano is a family of industrial remote I/O coupler and controller devices used in manufacturing and process automation systems. An out-of-bounds write vulnerability in certain nano Series devices can be triggered by sending a specially crafted network request, allowing a remote attacker to cause a denial-of-service condition that disrupts production systems.

Vendors: Contec.

Quick answers

Is CVE-2026-82782 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-82782 being exploited in the wild.
How severe is CVE-2026-82782?: Medium severity, with a CVSS score of 4.3, published 14 September 2026.
Which products and versions are affected?: Contec CONPROSYS nano Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041 versions prior to 1.61; Contec CONPROSYS nano Remote I/O Coupler Unit (EtherNet/IP Adapter) CPSN-EOB471EI-[]1 versions prior to 1.02; Contec CONPROSYS nano Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* versions prior to 1.82.
Is there a fix for CVE-2026-82782?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-82782 attacked?: It is attacked over the network.
Am I affected by CVE-2026-82782?: Check whether you run Contec CONPROSYS nano Programmable Remote I/O Coupler Unit (Software PLC Type), Contec CONPROSYS nano Remote I/O Coupler Unit (EtherNet/IP Adapter) or Contec CONPROSYS nano Remote I/O Coupler Unit (Server Type) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This is a CWE-787 out-of-bounds write vulnerability affecting CONPROSYS nano Series devices. The vulnerability exists in the remote I/O coupler unit (server type) CPSN-MCB271-* and related models, triggered by receiving a specially crafted request over the network from an unauthenticated remote attacker. The flaw results in a denial-of-service condition, specifically limited availability impact. Affected versions prior to 1.82 (CPSN-MCB271-*), 1.02 (CPSN-EOB471EI-[]1), and 1.61 (CPSN-PCB271-S1-041) are vulnerable; patched versions addressing this issue are available.

Affected products

Contec CONPROSYS nano Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* versions prior to 1.82
Contec CONPROSYS nano Remote I/O Coupler Unit (EtherNet/IP Adapter) CPSN-EOB471EI-[]1 versions prior to 1.02
Contec CONPROSYS nano Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041 versions prior to 1.61

Timeline

2026-09-10: disclosed
2026-09-14: advisory

References

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