---
cve: "CVE-2026-86530"
severity: "HIGH"
cvss: 8.6
epss: "0.4%"
vendor: "BUFFALO INC."
kev: false
exploited: false
published: "2026-09-28 08:14:00"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-29T09:08:06+02:00"
---

# CVE-2026-86530

> 8.6 HIGH

## Beschreibung

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.

## CNA-Record (Kanon, cvelistV5)

- CNA: **jpcert**
- State: PUBLISHED
- Stand: 2026-09-28 08:14:00
- CNA-CVSS: **7.2** (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Hoch | good |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://www.buffalo.jp/news/detail/20260928-01.html>
- <https://jvn.jp/en/vu/JVNVU94863997/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-86530) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_