CVE-2025-66357: CHOCO TEI WATCHER mini (IB-MCT001) contains an issue with improper check for unusual or exceptional conditions

Routine

MEDIUM 5.3REMOTEMITIGATE

CVE-2025-66357 is a medium-severity flaw (CVSS 5.3) affecting ib-mct001 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-754
Published	2025-12-16
Last modified	2026-10-07

Publisher (CNA): JPCERT/CC · Vendor: inaba

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-16 05:16 UTCPublished CVE record published
2026-10-07 19:10 UTCUpdated Record last modified

inaba ib-mct001 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-66357?

ib-mct001 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-66357 being exploited?

CVE-2025-66357 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-66357 affect?

CVE-2025-66357 affects ib-mct001 firmware. Severity is medium (CVSS 5.3). 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.

How urgent is CVE-2025-66357?

Priority 29/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-61976 HIGH 7.5 MITIGATE CHOCO TEI WATCHER mini (IB-MCT001) contains an issue with improper check for unusual or exceptional conditions
CVE-2025-59479 MEDIUM 6.1 MITIGATE CHOCO TEI WATCHER mini (IB-MCT001) contains an issue with improper restriction of rendered UI layers or frames

References

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