Summaryinfo

A vulnerability, which was classified as critical, was found in Buffalo Wi-Fi Router. This impacts an unknown function. Executing a manipulation can lead to missing authentication. The identification of this vulnerability is CVE-2026-33366. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Buffalo Wi-Fi Router (affected version not known). It has been declared as critical. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect availability. CVE summarizes:

Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to forcibly reboot the product without authentication.

The advisory is shared for download at buffalo.jp. This vulnerability was named CVE-2026-33366 since 03/25/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/27/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• Buffalo

Name

• Wi-Fi Router

License

• commercial

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