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Vulnerability record · CVE-2026-40621 · published 13 May 2026

CVE-2026-40621: Authentication bypass via alternate path vulnerability

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

9.3 CVSS 4.0 Critical EPSS 0.72% · top 47.9% CWE-288 · Authentication bypass via alternate path Deferred
9.3CVSS 4.0 base score
0.72%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://jvn.jp/en/jp/JVN03037325/
https://www.elecom.co.jp/news/security/20260512-01/

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-40621), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.