What is CVE-2026-27650?

CVE-2026-27650 is a high-severity vulnerability in Buffalo Inc. Wi-fi Router Products, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-03-27.

How severe is CVE-2026-27650?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Buffalo Inc. Wi-fi Router Products

CVE-2026-27650

OS Command Injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary OS command may be executed on the products.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.001 (24.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

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

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

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

Frequently asked questions

What is CVE-2026-27650?: CVE-2026-27650 is a high-severity vulnerability in Buffalo Inc. Wi-fi Router Products, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-03-27.
How severe is CVE-2026-27650?: High severity. CVSS v3 base score is 8.8 out of 10.