Authentication Bypass Vulnerability in BUFFALO Wi-Fi Routers
CVE-2026-32678

8.7HIGH

Key Information:

Vendor

Buffalo Inc.

Status
Buffalo Wi-fi Router Products
Vendor
CVE Published:
27 March 2026

What is CVE-2026-32678?

A significant authentication bypass vulnerability in BUFFALO Wi-Fi routers allows attackers to alter critical configuration settings without requiring proper authentication. This flaw poses a substantial risk to network security, as unauthorized users can exploit this issue to manipulate network configurations, potentially leading to data breaches or unauthorized access to sensitive information.

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Affected Version(s)

BUFFALO Wi-Fi router products See "References" section

References

https://www.buffalo.jp/news/detail/20260323-01.html
https://jvn.jp/en/jp/JVN83788689/

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

CVSS V3.0

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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