What is CVE-2026-32678?

CVE-2026-32678 is a high-severity vulnerability in Buffalo Inc. Wi-fi Router Products, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 7.5/10. Published 2026-03-27.

How severe is CVE-2026-32678?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Buffalo Inc. Wi-fi Router Products

CVE-2026-32678

Authentication bypass issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to alter critical configuration settings without authentication.

EPSS: 0.001 (28.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Buffalo Inc. Wi-fi Router Products — versions See "References" section

Weakness classification (CWE)

CWE-288 — Authentication Bypass Using an Alternate Path or Channel

References

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

Frequently asked questions

What is CVE-2026-32678?: CVE-2026-32678 is a high-severity vulnerability in Buffalo Inc. Wi-fi Router Products, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 7.5/10. Published 2026-03-27.
How severe is CVE-2026-32678?: High severity. CVSS v3 base score is 7.5 out of 10.