JVNVU#90314828
Multiple vulnerabilities in Contec PC-HELPER series

Overview

PC-HELPER series provided by Contec Co., Ltd. contains multiple vulnerabilities.

Products Affected

CVE-2026-82790, CVE-2026-82764

• PC-HELPER Wireless I/O DIO-0404RY-LWF versions prior to 1.01.00
• PC-HELPER Wireless I/O DIO-0404RY-LWF-US versions prior to 1.01.00

• CAN 2.0B Communication Wireless LAN / USB Converter Unit
  • CAN-2-WF versions prior to 2.20
  • CAN-2-USB versions prior to 2.20

Description

PC-HELPER series provided by Contec Co., Ltd. contains multiple vulnerabilities listed below.

• Cross-site scripting (CWE-79)
  • CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N Base Score 4.8
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Base Score 5.4
  • CVE-2026-82790
• Cross-site request forgery (CWE-352)
  • CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N Base Score 5.1
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N Base Score 4.3
  • CVE-2026-82764
• OS command injection (CWE-78)
  • CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Base Score 8.7
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Base Score 8.8
  • CVE-2026-82791
• Cross-site scripting (CWE-79)
  • CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N Base Score 4.8
  • CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Base Score 5.2
  • CVE-2026-82792
• Unrestricted upload of file with dangerous type (CWE-434)
  • CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Base Score 8.6
  • CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Base Score 7.2
  • CVE-2026-82793

Impact

• An arbitrary script may be executed on a logged-in user's web browser (CVE-2026-82790, CVE-2026-82792).
• If a user views a specially crafted page while logged in to the affected product, unintended operations may be performed (CVE-2026-82764).
• An arbitrary OS command may be executed by an attacker who can log in to the product (CVE-2026-82791)
• If a specially crafted file is uploaded by a remote authenticated attacker, arbitrary code may be executed on the product (CVE-2026-82793).

Solution

Update the firmware
Update the firmware to the latest version according to the information provided by the developer.