#VU124657 Missing Authentication for Critical Function in BUFFALO INC. products - CVE-2026-33366

Vulnerability identifier: #VU124657

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2026-33366

CWE-ID: CWE-306

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
WAPM-2133TR
WAPM-AX4R
WAPM-AX8R
WAPM-AXETR
WAPS-1266
WAPS-AX4
FS-M1266
FS-S1266
WCR-1166DHPL
WSR3600BE4-KH
WSR3600BE4P
WXR-1750DHP
WXR-1750DHP2
WXR18000BE10P
WXR-1900DHP
WXR-1900DHP2
WXR-1900DHP3
WXR-5950AX12
WXR-6000AX12B
WXR-6000AX12P
WXR-6000AX12S
WZR-1166DHP
WZR-1166DHP2
WZR-1750DHP
WZR-1750DHP2
WZR-S1750DHP
WRM-D2133HP
WRM-D2133HS
WTR-M2133HP
WTR-M2133HS
WEM-1266
WEM-1266WP
VR-U300W
VR-U500X
WAPM-1266R
WAPM-1266WDPR
WAPM-1266WDPRA
WAPM-1750D
WAPM-2133R

Software vendor:
BUFFALO INC.

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to missing authentication for critical function. A remote attacker can reboot the product without authentication.

Install updates from vendor's website.

• https://jvn.jp/en/jp/JVN83788689/index.html
• https://www.buffalo.jp/news/detail/20260323-01.html