CVE-2026-86530

BUFFALO Wi-Fi products handle some web form input improperly to assemble command line strings…

Risk score: 49/100
CVSS: 7.2 v3.1
Exploit chance (30 days): 0.4%
Published: 28 Sep 2026

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What to know

What it is: BUFFALO Wi-Fi products handle some web form input improperly to assemble command line strings internally. An administrative user may send a crafted HTTP request and execute an arbitrary OS command.
Affected: See advisory
Fix: Apply the vendor's security update; see the linked advisory.
Exploitation: No known exploitation

Why it is Yellow

CVSS 7.2 high

References

https://jvn.jp/en/vu/JVNVU94863997/
https://www.buffalo.jp/news/detail/20260928-01.html

Original description

BUFFALO Wi-Fi products handle some web form input improperly to assemble command line strings internally. An administrative user may send a crafted HTTP request and execute an arbitrary OS command.

Last activity 28 Sep 2026. Patch Forecast updates every hour.