Multiple vulnerabilities in BUFFALO Wi-Fi Products

Overview The web configuration user interfaces of Wi-Fi products provided by BUFFALO INC. contain multiple vulnerabilities listed below. OS command injection CWE-78 - CVE-2026-86530 Stack-based buffer overflow CWE-121 - CVE-2026-95104 Veeti Punnonen reported these vulnerabilities to JPCERT/CC...

CVE-2026-95104

Stack-based buffer overflow vulnerability exists in BUFFALO Wi-Fi products. A non-authenticated crafted HTTP request may cause a denial-of-service DoS condition...

CVE-2026-86530

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...

CVE-2026-95104

Stack-based buffer overflow vulnerability exists in BUFFALO Wi-Fi products. A non-authenticated crafted HTTP request may cause a denial-of-service DoS condition...

EUVD-2026-88166

Stack-based buffer overflow vulnerability exists in BUFFALO Wi-Fi products. A non-authenticated crafted HTTP request may cause a denial-of-service DoS condition...

CVE-2026-95104

A stack-based buffer overflow vulnerability exists in BUFFALO Wi-Fi products . An unauthenticated attacker can send a crafted HTTP request to trigger the vulnerability, potentially resulting in a denial-of-service (DoS) condition. No specific affected versions or remediation steps are provided in...

CVE-2026-86530

BUFFALO Wi-Fi products are vulnerable to an arbitrary OS command execution flaw due to improper handling of certain web form inputs when assembling internal command line strings. An administrative user can exploit this by sending a crafted HTTP request . No specific version numbers, root cause fi...

EUVD-2026-88165

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...

CVE-2026-86530

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...

CVE-2026-86530

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...

CVE-2026-95104: Stack-based Buffer Overflow

Stack-based buffer overflow vulnerability exists in BUFFALO Wi-Fi products. A non-authenticated crafted HTTP request may cause a denial-of-service DoS condition...

PT-2026-99812

Name of the Vulnerable Software and Affected Versions BUFFALO Wi-Fi products affected versions not specified Description BUFFALO Wi-Fi products improperly handle input from web forms when assembling internal command line strings. This allows an administrative user to execute arbitrary operating...

PT-2026-99815

Name of the Vulnerable Software and Affected Versions BUFFALO Wi-Fi products affected versions not specified Description A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than the buffer is allocated to hold. In this case, a non-authenticated...

CVE-2026-86530: Improper Neutralization of Special Elements used in an OS Command

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...

CVE-2026-33366: Missing Authentication for Critical Function

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

CVE-2026-32669: Improper Control of Generation of Code

Code injection vulnerability exists in BUFFALO Wi-Fi router products. If this vulnerability is exploited, an arbitrary code may be executed on the products...

CVE-2026-27650: Improper Neutralization of Special Elements used in an OS Command

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...

CVE-2026-33280: Hidden Functionality

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...

CVE-2026-32678: Authentication Bypass Using an Alternate Path or Channel

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

CVE-2025-46413: Use of Password Hash With Insufficient Computational Effort

Use of password hash with insufficient computational effort issue exists in BUFFALO Wi-Fi router 'WSR-1800AX4 series'. When WPS is enabled, PIN code and/or Wi-Fi password may be obtained by an attacker...