---
cve: "CVE-2026-73456"
severity: "CRITICAL"
cvss: 9.2
epss: "73.6%"
vendor: "Arista Networks"
kev: false
exploited: false
published: "2026-09-16 19:17:32"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T04:02:10+02:00"
---

# CVE-2026-73456

> 9.2 CRITICAL

## Beschreibung

Under certain circumstances on affected platforms running Arista EOS with gRPC Network Packet Sampling Interface (gNPSI) enabled, an unauthenticated gNPSI client can craft a malicious request to allow arbitrary code execution, granting an attacker full administrative control over the compromised switch.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/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 | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://www.arista.com/en/support/advisories-notices/security-advisory/24714-security-advisory-0158>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73456) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_