CVE-2026-73454: On affected platforms running Arista EOS with gRPC Network Security Interface (gNSI) Credentialz configured, a specially crafted request can cause unintended…

PriorityP355high8.1CVSS 3.1

AVNACLPRLUINSUCHIHAN

EPSS

0.39%

31.0th percentile

On affected platforms running Arista EOS with gRPC Network Security Interface (gNSI) Credentialz configured, a specially crafted request can cause unintended modifications to the target account's properties. This may result in the account being assigned elevated privileges or access beyond what an administrator intended.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
arista_networks	eos	>= 4.30.0F < 4.31.0F	4.31.0F
arista_networks	eos	>= 4.31.0F < 4.32.0F	4.32.0F
arista_networks	eos	>= 4.32.0F < 4.33.0F	4.33.0F
arista_networks	eos	4.33.0F – 4.33.8M	—
arista_networks	eos	4.34.0F – 4.34.7M	—
arista_networks	eos	4.35.0F – 4.35.5M	—
arista_networks	eos	4.36.0F – 4.36.0.1F	—

CVSS provenance

nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

nvdv4.08.6HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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

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