Missing Authentication for Critical Function in I-O DATA products - CVE-2025-32738

Vulnerability identifier: #VU109826

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-32738

CWE-ID: CWE-306

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to missing authentication for critical function. A remote attacker can change the product settings.

HDL-TC1
HDL-TC500
HDL-T1NV
HDL-T1WH
HDL-T2NV
HDL-T2WH
HDL-T3NV
HDL-T3WH

Install updates from vendor's website.

HDL-TC1 - update to 1.22
HDL-TC500 - update to 1.22
HDL-T1WH - update to 1.22
HDL-T2NV - update to 1.22
HDL-T2WH - update to 1.22
HDL-T3NV - update to 1.22
HDL-T3WH - update to 1.22

• https://jvn.jp/en/vu/JVNVU91726405/
• https://www.iodata.jp/support/information/2025/05_hdl-t/

• Multiple vulnerabilities in I-O DATA HDL-T Series