CVE-2026-73447Network attack vector

Root command execution via crafted Certz Rotate

Published Sep 16, 2026 · Updated Sep 16, 2026

OS command injection in gNSI Certz and Bootz in Arista EOS allows remote authenticated users to execute arbitrary commands as root. A crafted Certz Rotate request reaches unsafe OS-command handling; Arista has not disclosed the affected function or how request data enters the command. Exposure requires gNSI Certz enabled or Bootz initial provisioning, and a privileged authenticated attacker can fully compromise the device.

CVSS severity9.1
Critical
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in gNSI Certz and Bootz in Arista EOS allows remote authenticated users to execute arbitrary commands as root. A crafted Certz Rotate request reaches unsafe OS-command handling; Arista has not disclosed the affected function or how request data enters the command. Exposure requires gNSI Certz enabled or Bootz initial provisioning, and a privileged authenticated attacker can fully compromise the device.

The record

CVE
CVE-2026-73447
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
Arista Networks
Product
Arista EOS
Classifications
CWE-78, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.30.2F <4.31.0F changes=[{"at":"4.30.2F","status":"affected"}]
  2. Affected versionversion=4.31.0F <4.32.0F
  3. Affected versionversion=4.32.0F <4.33.0F
  4. Affected versionversion=4.33.0F <=4.33.8M
  5. Affected versionversion=4.34.0F <=4.34.7M
  6. Affected versionversion=4.35.0F <=4.35.5M
  7. Affected versionversion=4.36.0F <=4.36.0.1F

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Arista Networks · Arista EOSversion=4.30.2F <4.31.0F changes=[{"at":"4.30.2F","status":"affected"}]; version=4.31.0F <4.32.0F; version=4.32.0F <4.33.0F; version=4.33.0F <=4.33.8M; version=4.34.0F <=4.34.7M; version=4.35.0F <=4.35.5M; version=4.36.0F <=4.36.0.1F

Published CVSS scores

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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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