# CVE-2026-82764: Contec PC-HELPER and CONPROSYS cross-site request forgery

Source: https://junglewise.ai/threats/cve-2026-82764-contec-pc-helper-and-conprosys-cross-site-request-forgery  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-14. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-82764 · Severity: medium · CVSS 4.3 · Published 2026-09-14

Contec industrial IoT and automation products contain a cross-site request forgery (CSRF) vulnerability that allows attackers to trick logged-in users into performing unintended operations. An authenticated user viewing a malicious webpage could unknowingly trigger administrative actions, system modifications, or configuration changes without their knowledge, potentially compromising operational integrity.

Vendors: [Contec](https://junglewise.ai/threats/vendors/contec).

## Quick answers

**Is CVE-2026-82764 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82764 being exploited in the wild.

**How severe is CVE-2026-82764?** 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 CPSN-PCB271-S1-041 prior to 1.61; Contec CONPROSYS nano Remote I/O Coupler Unit CPSN-EOB471EI prior to 1.02; Contec CONPROSYS nano Remote I/O Coupler Unit CPSN-MCB271 prior to 1.82; Contec PC-HELPER Wireless I/O DIO-0404RY-LWF prior to 1.01.00; and 1 more.

**Is there a fix for CVE-2026-82764?** 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-2026-82764 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-82764?** Check whether you run Contec CONPROSYS nano Programmable Remote I/O Coupler Unit CPSN-PCB271-S1-041, Contec CONPROSYS nano Remote I/O Coupler Unit CPSN-EOB471EI, Contec CONPROSYS nano Remote I/O Coupler Unit CPSN-MCB271 or one of the others listed 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

A cross-site request forgery (CWE-352) vulnerability exists in multiple Contec products including the PC-HELPER series and CONPROSYS series. The vulnerability allows an attacker to craft a malicious webpage that, when viewed by a user already logged into an affected Contec product, will cause the victim's browser to send authenticated requests on the attacker's behalf. The attack requires user interaction (visiting a malicious page while authenticated) but no special privileges. An attacker can perform any action that the logged-in user is authorized to perform, potentially including system configuration changes, data manipulation, or network topology modifications.

## Affected products

- Contec PC-HELPER Wireless I/O DIO-0404RY-LWF prior to 1.01.00
- Contec PC-HELPER Wireless I/O DIO-0404RY-LWF-US prior to 1.01.00
- Contec CONPROSYS nano Remote I/O Coupler Unit CPSN-MCB271 prior to 1.82
- Contec CONPROSYS nano Remote I/O Coupler Unit CPSN-EOB471EI prior to 1.02
- Contec CONPROSYS nano Programmable Remote I/O Coupler Unit CPSN-PCB271-S1-041 prior to 1.61

## Timeline

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

## References

- [https://jvn.jp/en/vu/JVNVU90314828/](https://jvn.jp/en/vu/JVNVU90314828/)
- [https://jvn.jp/en/vu/JVNVU96551518/](https://jvn.jp/en/vu/JVNVU96551518/)

## Related threats

- [Contec PC-HELPER Wireless I/O cross-site scripting](https://junglewise.ai/threats/cve-2026-82790-contec-pc-helper-wireless-i-o-cross-site-scripting)