---
title: "CVE-2026-82765: Contec FX Series - Path Traversal"
description: "Contec FX5000, FX4000, and FX3000 series contain a path traversal vulnerability caused by improper input validation in FTP access, letting attackers view or alter arbitrary files on the server, exploit requires FTP access."
url: https://panop.io/threat-heartbeat/CVE-2026-82765/
---

# CVE-2026-82765 Contec FX Series - Path Traversal

Contec FX5000, FX4000, and FX3000 series contain a path traversal vulnerability caused by improper input validation in FTP access, letting attackers view or alter arbitrary files on the server, exploit requires FTP access.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.49% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-82765)

## Details

Type

Path Traversal

Impact

File System Read, File System Write

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Published

14 September 2026

Updated

15 October 2026

Weakness

[CWE-23](https://cwe.mitre.org/data/definitions/23.html)

## Vendor fix

Update to the latest firmware version provided by Contec.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-82765](https://nvd.nist.gov/vuln/detail/CVE-2026-82765)
- [https://jvn.jp/en/vu/JVNVU99009004/](https://jvn.jp/en/vu/JVNVU99009004/)
- [https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec\_security\_fl\_26091000\_en.pdf](https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_fl_26091000_en.pdf)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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