What is CVE-2025-66357?

CVE-2025-66357 is a medium-severity vulnerability in Inaba Ib-Mct001, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 5.3/10. Published 2025-12-16.

How severe is CVE-2025-66357?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Inaba Ib-Mct001

CVE-2025-66357

CHOCO TEI WATCHER mini (IB-MCT001) contains an issue with improper check for unusual or exceptional conditions. When the Video Download feature is in a specific communication state, the product's resources may be consumed abnormally.

Published 2025-12-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.003 (19.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Inaba Ib-Mct001
Inaba Ib-Mct001 Firmware
Inaba Denki Sangyo Co., Ltd. Choco Tei Watcher Mini (Ib-Mct001) — versions all versions

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

www.inaba.co.jp/files/chocomini_vulnerability_newly_identified.pdf (Vendor Advisory)
jvn.jp/en/vu/JVNVU92827367/ (Third Party Advisory)

Frequently asked questions

What is CVE-2025-66357?: CVE-2025-66357 is a medium-severity vulnerability in Inaba Ib-Mct001, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 5.3/10. Published 2025-12-16.
How severe is CVE-2025-66357?: Medium severity. CVSS v3 base score is 5.3 out of 10.