Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the product without authentication.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

References
Link Providers
https://www.spirityenterprise.com/pentest spirity
https://jvn.jp/en/jp/JVN83788689/ cve-icon cve-icon
https://www.buffalo.jp/news/detail/20260323-01.html cve-icon cve-icon
History

Fri, 27 Mar 2026 09:30:00 +0000

Type Values Removed Values Added
Title Forced Reboot via Authentication Bypass on Buffalo Wi‑Fi Routers

Fri, 27 Mar 2026 06:00:00 +0000

Type Values Removed Values Added
Description Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the product without authentication.
Weaknesses CWE-306
References
Metrics cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

Updated: 2026-03-27T05:25:58.656Z

Reserved: 2026-03-25T06:25:35.445Z

Link: CVE-2026-33366

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-27T06:16:38.997

Modified: 2026-03-27T06:16:38.997

Link: CVE-2026-33366

cve-icon Redhat

No data.