RCE in Arista Networks Eos
CVE-2026-73447
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.
Vulnerability class: Command Injection (OS Command Injection)
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- psirt@arista.com (vendor-advisory)
Frequently asked questions
- What is CVE-2026-73447?
- CVE-2026-73447 is a critical-severity vulnerability in Arista Networks Eos, classified under OS Command Injection. CVSS score: 9.1/10. Published 2026-09-16.
- How severe is CVE-2026-73447?
- Critical severity. CVSS v3 base score is 9.1 out of 10.