Paper/Archive/CVE-2026-73447

CVE-2026-73447

Arista Networks EOS — Security Advisory 0162 - gNSI Certz/Bootz OS Command Injection via Crafted Rotate Request

CVSS 9.4 (CNA)9.4 / 10 × 3028.2 Not in CISA KEV+300.0 EPSS percentile 53.4.534 × 2010.7 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

EOS4.30.2F – < 4.31.0F4.31.0FCNA

EOS4.31.0F – < 4.32.0F4.32.0FCNA

EOS4.32.0F – < 4.33.0F4.33.0FCNA

EOS4.33.0F – 4.33.8M–CNA

EOS4.34.0F – 4.34.7M–CNA

EOS4.35.0F – 4.35.5M–CNA

EOS4.36.0F – 4.36.0.1F–CNA

Scores by source

Arista (CNA)9.4CVSS: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 (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisoryarista.com/en/support/advisories-notices/security-advisory/24718-security-advisory-0162