{"id":"CVE-2026-86530","title":"BUFFALO Wi-Fi products handle some web form input improperly to assemble command line strings internally","summary":"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.","severity":"high","cvss":7.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-78"],"vendor":"BUFFALO INC.","product":"WSR-300HP","affected":["WSR-300HP < Ver.2.55","WEX-G300 < Ver.1.71"],"published":"2026-09-28","updated":"2026-09-28","sourceUpdated":"2026-09-28T09:17:07.653","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86530","references":[{"url":"https://jvn.jp/en/vu/JVNVU94863997/","label":"vultures@jpcert.or.jp"},{"url":"https://www.buffalo.jp/news/detail/20260928-01.html","label":"vultures@jpcert.or.jp"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-28T09:06:28.563Z","slug":"CVE-2026-86530","body":"## Overview\n\nBUFFALO 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":39.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}