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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

No configuration.

History

13 May 2026, 15:47

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-13 13:16

Updated : 2026-06-17 10:45

NVD link : CVE-2026-40621

Mitre link : CVE-2026-40621

CVE.ORG link : CVE-2026-40621

JSON object : View

Products Affected

No product.

CWE

CWE-288

Authentication Bypass Using an Alternate Path or Channel

{"id": "CVE-2026-40621", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40621", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-05-13T15:07:35.372388Z"}}], "cvssMetricV30": [{"type": "Secondary", "source": "vultures@jpcert.or.jp", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "vultures@jpcert.or.jp", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "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:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "vultures@jpcert.or.jp", "affectedData": [{"vendor": "ELECOM CO.,LTD.", "product": "WRC-BE72XSD-B", "versions": [{"status": "affected", "version": "v1.1.1 and earlier"}]}, {"vendor": "ELECOM CO.,LTD.", "product": "WRC-BE72XSD-BA", "versions": [{"status": "affected", "version": "v1.1.1 and earlier"}]}, {"vendor": "ELECOM CO.,LTD.", "product": "WRC-BE65QSD-B", "versions": [{"status": "affected", "version": "v1.1.0 and earlier"}]}, {"vendor": "ELECOM CO.,LTD.", "product": "WRC-W702-B", "versions": [{"status": "affected", "version": "v1.1.0 and earlier"}]}]}], "published": "2026-05-13T13:16:42.750", "references": [{"url": "https://jvn.jp/en/jp/JVN03037325/", "source": "vultures@jpcert.or.jp"}, {"url": "https://www.elecom.co.jp/news/security/20260512-01/", "source": "vultures@jpcert.or.jp"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "vultures@jpcert.or.jp", "description": [{"lang": "en", "value": "CWE-288"}]}], "descriptions": [{"lang": "en", "value": "ELECOM wireless LAN access point devices do not require authentication to access some specific URLs. The affected product may be operated without authentication."}], "lastModified": "2026-06-17T10:45:32.780", "sourceIdentifier": "vultures@jpcert.or.jp"}