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CRITICAL · 9.8

CVE-2026-40621

ELECOM wireless LAN access point devices do not require authentication to access some specific URLs. The affected product may be operated without authentication.

Vulnerability Description

ELECOM wireless LAN access point devices do not require authentication to access some specific URLs. The affected product may be operated without authentication.

CVSS Score

9.8

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Related Weaknesses (CWE)

CWE-288

References

FAQ

What is CVE-2026-40621?

CVE-2026-40621 is a vulnerability with a CVSS score of 9.8 (CRITICAL). ELECOM wireless LAN access point devices do not require authentication to access some specific URLs. The affected product may be operated without authentication.

How severe is CVE-2026-40621?

CVE-2026-40621 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-40621?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.