Privilege Escalation in Arista EOS Products
CVE-2026-73447

9.4CRITICAL

Key Information:

Vendor

Arista Networks

Status
Eos
Vendor
CVE Published:
16 September 2026

What is CVE-2026-73447?

A privileged attacker can exploit a specific operation involving the gRPC Network Security Interface (gNSI) on Arista EOS-based products. This exploitation allows an authenticated user to escalate privileges and execute arbitrary OS commands through a specially crafted Certz Rotate request. Additionally, the Bootz service is also susceptible to this vulnerability, which poses a significant risk of full device compromise.

Affected Version(s)

EOS 710 Series 4.30.2F < 4.31.0F

EOS 710 Series 4.31.0F < 4.32.0F

EOS 710 Series 4.32.0F < 4.33.0F

References

https://www.arista.com/en/support/advisories-notices/secu...
vendor-advisory

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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