CVE-2026-73447: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Arista Networks EOS
CVE-2026-73447 is a critical OS command injection vulnerability in Arista Networks EOS. It allows an authenticated, privileged user to execute arbitrary OS commands with root privileges via the gRPC Network Security Interface (gNSI) Certz service and the Bootz service. Successful exploitation leads to full device compromise.
AI Analysis
Technical Summary
This vulnerability (CWE-78) affects Arista EOS-based products where an authenticated user can exploit the gNSI Certz service and Bootz service to escalate privileges and execute arbitrary OS commands as root. The flaw arises from improper neutralization of special elements in OS commands, enabling command injection. The CVSS 3.1 score is 9.1 (critical), reflecting network attack vector, low complexity, high privileges required, no user interaction, and complete confidentiality, integrity, and availability impact.
Potential Impact
An attacker with authentication and high privileges can execute arbitrary OS commands as root, resulting in full compromise of the affected device. This includes potential control over device operations, data, and network traffic.
Mitigation Recommendations
No patch or official fix information is provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the affected services and limit privileged user access to trusted personnel only.
CVE-2026-73447: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Arista Networks EOS
Description
CVE-2026-73447 is a critical OS command injection vulnerability in Arista Networks EOS. It allows an authenticated, privileged user to execute arbitrary OS commands with root privileges via the gRPC Network Security Interface (gNSI) Certz service and the Bootz service. Successful exploitation leads to full device compromise.
CVSS v3.1
Score 9.1critical
Affected software
Arista Networks
EOS
pkg:github/arista-networks/eosRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-78) affects Arista EOS-based products where an authenticated user can exploit the gNSI Certz service and Bootz service to escalate privileges and execute arbitrary OS commands as root. The flaw arises from improper neutralization of special elements in OS commands, enabling command injection. The CVSS 3.1 score is 9.1 (critical), reflecting network attack vector, low complexity, high privileges required, no user interaction, and complete confidentiality, integrity, and availability impact.
Potential Impact
An attacker with authentication and high privileges can execute arbitrary OS commands as root, resulting in full compromise of the affected device. This includes potential control over device operations, data, and network traffic.
Mitigation Recommendations
No patch or official fix information is provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the affected services and limit privileged user access to trusted personnel only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Arista
- Date Reserved
- 2026-08-12T16:42:47.921Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aaa3b7555bf5e2cf520feae
Added to database: 09/16/2026, 06:47:17 UTC
Last enriched: 09/16/2026, 07:01:36 UTC
Last updated: 09/16/2026, 07:01:36 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.