# CVE-2026-82789: Contec CONPROSYS HMI System eval injection

Source: https://junglewise.ai/threats/cve-2026-82789-contec-conprosys-hmi-system-eval-injection  
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-2026-82789 · Severity: high · CVSS 8.8 · Published 2026-09-14

CONPROSYS HMI System is an industrial human-machine interface used to control and monitor manufacturing and automation systems. An eval injection vulnerability allows authenticated attackers to execute arbitrary code on systems running vulnerable versions, potentially compromising production environments, stealing operational data, or disrupting critical industrial processes.

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

## Quick answers

**Is CVE-2026-82789 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82789 being exploited in the wild.

**How severe is CVE-2026-82789?** High severity, with a CVSS score of 8.8, published 14 September 2026.

**Which products and versions are affected?** Contec CONPROSYS HMI System prior to 3.8.0.

**Is there a fix for CVE-2026-82789?** 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-2026-82789 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-82789?** Check whether you run Contec CONPROSYS HMI System 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

CVE-2026-82789 is an improper neutralization of directives in dynamically evaluated code (eval injection, CWE-95) in CONPROSYS HMI System. The vulnerability requires authentication (PR:L) and can be exploited over the network (AV:N) without user interaction. An authenticated attacker can inject and execute arbitrary code with high impact on confidentiality, integrity, and availability. The attack vector is network-based and precondition is valid login credentials to the HMI System. Patches are available in version 3.8.0 and later.

## Affected products

- Contec CONPROSYS HMI System prior to 3.8.0

## Timeline

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

## References

- [https://jvn.jp/en/vu/JVNVU96551518/](https://jvn.jp/en/vu/JVNVU96551518/)
- [https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf](https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf)