# CVE-2026-82780: Contec CONPROSYS TM Series unrestricted file upload

Source: https://junglewise.ai/threats/cve-2026-82780-contec-conprosys-tm-series-unrestricted-file-upload  
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-2026-82780 · Severity: high · CVSS 8.8 · Published 2026-09-14

CONPROSYS TM Series is an industrial controller product used in manufacturing and automation environments. A vulnerability allows authenticated users to upload specially crafted files that lead to arbitrary command execution on the device, potentially compromising the entire industrial system and halting production.

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

## Quick answers

**Is CVE-2026-82780 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82780 being exploited in the wild.

**How severe is CVE-2026-82780?** High severity, with a CVSS score of 8.8, published 14 September 2026.

**Which products and versions are affected?** Contec CONPROSYS TM Series prior to 2.19.

**Is there a fix for CVE-2026-82780?** 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-2026-82780 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-82780?** Check whether you run Contec CONPROSYS TM Series 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

The vulnerability is an unrestricted upload of file with dangerous type (CWE-434) in the CONPROSYS TM Series. An authenticated attacker can upload a specially crafted file that bypasses file type validation, resulting in arbitrary command execution on the affected device. The attack requires authentication and network access to the product's upload interface. Successful exploitation allows an attacker to execute arbitrary OS commands with the privileges of the affected service, potentially leading to complete system compromise. Patches are available for affected versions prior to 2.19.

## Affected products

- Contec CONPROSYS TM Series prior to 2.19

## Timeline

- 2026-09-14: disclosed

## 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)

## Related threats

- [Contec CONPROSYS TM Series OS command injection](https://junglewise.ai/threats/cve-2026-82779-contec-conprosys-tm-series-os-command-injection)