---
title: "CVE-2026-73454: Arista EOS - Broken Access Control"
description: "Arista EOS with gRPC Network Security Interface (gNSI) Credentialz contains a broken access control vulnerability caused by specially crafted requests modifying account properties, letting attackers escalate privileges, exploit requires gNSI Credentialz configured."
url: https://panop.io/threat-heartbeat/CVE-2026-73454/
---

# CVE-2026-73454 Arista EOS - Broken Access Control

Arista EOS with gRPC Network Security Interface (gNSI) Credentialz contains a broken access control vulnerability caused by specially crafted requests modifying account properties, letting attackers escalate privileges, exploit requires gNSI Credentialz configured.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.39% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-73454)

## Details

Type

Broken Access Control

Impact

Privilege Escalation, Broken Access Control

CVSS vector

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

Published

16 September 2026

Updated

15 October 2026

Weakness

[CWE-77](https://cwe.mitre.org/data/definitions/77.html)

## Vendor fix

Update to the latest version with gNSI Credentialz security fixes.

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-2026-73454](https://nvd.nist.gov/vuln/detail/CVE-2026-73454)
- [https://www.arista.com/en/support/advisories-notices/security-advisory/24721-security-advisory-0165](https://www.arista.com/en/support/advisories-notices/security-advisory/24721-security-advisory-0165)

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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

Panop answers these inside your environment, for this CVE and every other finding.

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