CVE-2026-33280

high-risk

Published 2026-03-27

Hidden functionality issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to gain access to the product’s debugging functionality, resulting in the execution of arbitrary OS commands.

Do I need to act?

0.09% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (20)

Wcr-1166Dhpl Firmware

Wsr3600Be4-Kh Firmware

Wsr3600Be4P Firmware

Wxr-1750Dhp Firmware

Wxr-1750Dhp2 Firmware

Wxr18000Be10P Firmware

Wxr-1900Dhp Firmware

Wxr-1900Dhp2 Firmware

Wxr-1900Dhp3 Firmware

Wxr-5950Ax12 Firmware

Wxr-6000Ax12B Firmware

Wxr-6000Ax12P Firmware

Wxr-6000Ax12S Firmware

Wzr-1166Dhp Firmware

Wzr-1166Dhp2 Firmware

Wzr-1750Dhp Firmware

Wzr-1750Dhp2 Firmware

Wzr-S1750Dhp Firmware

Wrm-D2133Hp Firmware

Wrm-D2133Hs Firmware

Affected Vendors

Buffalo

References (2)

Third Party Advisory https://jvn.jp/en/jp/JVN83788689/

Vendor Advisory https://www.buffalo.jp/news/detail/20260323-01.html

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high-risk

Severity 32/34 · Critical

Exploitability 0/34 · Minimal

Exposure 25/34 · High