CVE-2025-32738Network attack vector

Unauthenticated modification of appliance settings

Published May 15, 2025 · Updated May 15, 2025

Missing authentication in HDL-T Series firmware 1.21 and earlier allows remote attackers to modify appliance settings over a network. Published advisories identify neither the affected endpoint nor the operation accepting unauthenticated configuration changes. Network access requires no credentials or interaction; documented impact is limited to modification of appliance configuration.

CVSS severity6.9
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in HDL-T Series firmware 1.21 and earlier allows remote attackers to modify appliance settings over a network. Published advisories identify neither the affected endpoint nor the operation accepting unauthenticated configuration changes. Network access requires no credentials or interaction; documented impact is limited to modification of appliance configuration.

The record

CVE
CVE-2025-32738
Published
May 15, 2025
Updated
May 15, 2025
Vendor
I-O DATA DEVICE, INC.
Product
HDL-TC500
Classifications
CWE-306, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2025CVE publishedPublication date reported by the CVE source.
  2. May 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Ver.1.21 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

I-O DATA DEVICE, INC. · HDL-TC500version=Ver.1.21 and earlier
I-O DATA DEVICE, INC. · HDL-T2NVversion=Ver.1.21 and earlier
I-O DATA DEVICE, INC. · HDL-T3NVversion=Ver.1.21 and earlier
I-O DATA DEVICE, INC. · HDL-T3WHversion=Ver.1.21 and earlier
I-O DATA DEVICE, INC. · HDL-T1NVversion=Ver.1.21 and earlier
I-O DATA DEVICE, INC. · HDL-T1WHversion=Ver.1.21 and earlier
I-O DATA DEVICE, INC. · HDL-T2WHversion=Ver.1.21 and earlier
I-O DATA DEVICE, INC. · HDL-TC1version=Ver.1.21 and earlier

Published CVSS scores

6.9JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
5.3JPCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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