---
title: "CVE-2026-73447: Arista EOS - Command Injection & Privilege Escalation"
description: "Arista EOS-based products contain a command injection caused by crafted requests to gRPC Network Security Interface (gNSI) Certz and Bootz services, letting authenticated attackers escalate privileges and execute arbitrary OS commands."
url: https://panop.io/threat-heartbeat/CVE-2026-73447/
---

# CVE-2026-73447 Arista EOS - Command Injection & Privilege Escalation

Arista EOS-based products contain a command injection caused by crafted requests to gRPC Network Security Interface (gNSI) Certz and Bootz services, letting authenticated attackers escalate privileges and execute arbitrary OS commands.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.70% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-73447)

## Details

Type

Command Injection

Impact

Remote Code Execution, Privilege Escalation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Published

16 September 2026

Updated

15 October 2026

Weakness

[CWE-78](https://cwe.mitre.org/data/definitions/78.html)

## Vendor fix

Update to the latest version with patches for gNSI Certz and Bootz services.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-73447](https://nvd.nist.gov/vuln/detail/CVE-2026-73447)
- [https://www.arista.com/en/support/advisories-notices/security-advisory/24718-security-advisory-0162](https://www.arista.com/en/support/advisories-notices/security-advisory/24718-security-advisory-0162)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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