---
cve: "CVE-2026-87684"
severity: "HIGH"
cvss: 8.7
epss: ""
vendor: "Brocade"
kev: false
exploited: false
published: "2026-10-08 03:16:37"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-09T13:17:48+02:00"
---

# CVE-2026-87684

> 8.7 HIGH

## Beschreibung

A stack-based buffer overflow vulnerability exists in the SNMP daemon request handling of Brocade Fabric versions before 10.0.1. When processing an incoming SNMPv3 packet, an internal statistics gathering handler copies user-supplied context name data into a fixed-size buffer without properly validating the length of the string. A remote, unauthenticated attacker (under default configuration) can exploit this vulnerability by sending a specially crafted SNMPv3 packet, leading to memory corruption, daemon crash (Denial of Service), or potential arbitrary code execution.

## CNA-Record (Kanon, cvelistV5)

- CNA: **brocade**
- State: PUBLISHED
- Stand: 2026-10-08 02:18:19
- CNA-CVSS: **8.7** (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Benachbart | warn |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## BSI-Hinweise (deutsch)

- [Broadcom Fabric OS: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-3779) — _BSI-Einstufung: hoch_
  Ein Angreifer kann mehrere Schwachstellen in Broadcom Fabric OS ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren und um Sicherheitsvorkehrungen zu umgehen.

## Referenzen

- <https://support.broadcom.com/external/content/SecurityAdvisories/0/39078>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-87684/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_