Hidden Functionality Issue in BUFFALO Wi-Fi Routers
CVE-2026-33280

8.6HIGH

Key Information:

Vendor

Buffalo Inc.

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

What is CVE-2026-33280?

A security flaw has been identified in BUFFALO Wi-Fi router products, where a hidden functionality could be exploited by attackers. This vulnerability may allow unauthorized access to the router’s debugging features, enabling them to execute arbitrary operating system commands. The potential for exploitation poses a significant risk to network integrity and device security, highlighting the importance of prompt updates and security patches from the vendor.

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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:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

CVSS V3.0

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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