Name: CVE-2026-73456: Improper Control of Generation of Code
Creator: Rapid7
Published: 2026-09-16T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-73456, CWE-94, CVSS 10, EPSS 0.00695

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 Details

CVSS 4.0 Base Score: 9.2 (CRITICAL)
CVSS 4.0 Vector: (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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 10
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Arista Eos	—	Upgrade to a remediated software version: 4.36.2F and later releases in the 4.36.x train, 4.35.6M and later releases in the 4.35.x train, or 4.34.8M and later releases in the 4.34.x train.	Sep 10, 2026	Sep 9, 2026

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CVSS Details

Covered by Rapid7

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