---
id: CVE-2026-82793
title: >-
  Unrestricted upload of file with dangerous type issue exists in Contec CAN
  2.0B Communication Wireless LAN / USB Converter Unit
summary: >-
  Unrestricted upload of file with dangerous type issue exists in Contec CAN
  2.0B Communication Wireless LAN / USB Converter Unit. If a specially crafted
  file is uploaded by a remote authenticated attacker, arbitrary code may be
  executed o…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-434
vendor: 'Contec Co., Ltd.'
product: CAN-2-WF
affected:
  - CAN-2-WF < 2.20
  - CAN-2-USB < 2.20
published: '2026-09-14'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T19:27:25.623'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82793'
references:
  - url: 'https://jvn.jp/en/vu/JVNVU90314828/'
    label: vultures@jpcert.or.jp
  - url: >-
      https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_ph_26091000_en.pdf
    label: vultures@jpcert.or.jp
tags:
  - nvd
  - cve.org
epss: 0.00351
epssPercentile: 0.287
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-14T11:39:25.591689Z'
ingestedAt: '2026-09-14T15:23:07.460Z'
---

## Overview

Unrestricted upload of file with dangerous type issue exists in Contec CAN 2.0B Communication Wireless LAN / USB Converter Unit. If a specially crafted file is uploaded by a remote authenticated attacker, arbitrary code may be executed on the product.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.