CVE-2026-73456

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 v3 10.0 CRITICAL

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

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

Configurations

No configuration.

History

16 Sep 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-16 19:17

Updated : 2026-09-17 12:18

NVD link : CVE-2026-73456

Mitre link : CVE-2026-73456

CVE.ORG link : CVE-2026-73456

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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