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.

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

.