CVE-2026-73447

Security Advisory 0162 - gNSI Certz/Bootz OS Command Injection via Crafted Rotate Request

State: Published
Severity: 9.4 Critical
Published: Sep 16, 2026
Updated: Sep 17, 2026
Reserved: Aug 12, 2026

Description

A privileged attacker can exploit certain operation to execute arbitrary commands with root privileges, leading to full device compromise. An authenticated user can exploit gRPC Network Security Interface (gNSI) Certz service on Arista EOS-based products to escalate privileges and execute arbitrary OS commands via a crafted Certz Rotate request. The Bootz service is also affected.

Scores

CVSS	Score	Vector	Source
4.0	9.4 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	Arista
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H	Arista

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

Product	Versions
EOSArista Networks	4.30.2F to before 4.31.0FAffectedfrom 4.30.2FAffected 4.31.0F to before 4.32.0FAffected 4.32.0F to before 4.33.0FAffected 4.33.0F through 4.33.8MAffected 4.34.0F through 4.34.7MAffected 4.35.0F through 4.35.5MAffected 4.36.0F through 4.36.0.1FAffected

References

Arista Networks Security Advisory 0162vendor-advisory

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