CVE-2026-17192
Received Received - Intake

VCO Feature Privilege Escalation in Arista EOS

Publication date: 2026-07-27

Last updated on: 2026-07-27

Assigner: Arista Networks, Inc.

Description
A VCO feature does not sufficiently validate caller-supplied input, allowing requests to be made on behalf of authenticated tenant accounts to internal services that are not otherwise accessible. This vulnerability requires a minimum role of Enterprise Standard Admin. This issue was discovered internally by Arista and the company is not aware of any malicious uses of this issue in customer networks.

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Meta Information

Published
2026-07-27
Last Modified
2026-07-27
Generated
2026-07-27
AI Q&A
2026-07-27
EPSS Evaluated
N/A
NVD
CVE-2026-17192
EUVD
EUVD-2026-49373

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

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Executive Summary

This vulnerability involves a VCO feature that fails to properly validate input from callers. It allows attackers with Enterprise Standard Admin privileges to make requests on behalf of authenticated tenant accounts to internal services that should not be accessible. This bypasses normal access controls.

Impact Analysis

An attacker could exploit this to access sensitive internal services or data by impersonating legitimate tenant accounts. This could lead to unauthorized actions, data breaches, or further network compromise if combined with other vulnerabilities.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating confidentiality requirements in GDPR and HIPAA. Organizations may face compliance violations, fines, or reputational damage if exploited.

Mitigation Strategies

Immediately restrict the Enterprise Standard Admin role to only trusted users and enforce least-privilege access. Review and audit all internal service access logs for unusual requests originating from authenticated tenant accounts.

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