CVE-2026-16812: Arista VeloCloud Orchestrator On-Prem OS Command Injection Vulnerability

CISA Known Exploited Vulnerabilities

Name

Arista VeloCloud Orchestrator On-Prem OS Command Injection Vulnerability

Vendor

Arista

Product

VeloCloud Orchestrator

Added to the catalog

2026-07-27

Due date for US federal agencies

2026-07-30

Weaknesses

CWE-78

Catalog version

2026.10.30

Arista VeloCloud Orchestrator On-Prem contains an OS command injection vulnerability that may allow a remote attacker to access privileged internal functionality and impact the VCO host. Successful exploitation may compromise the confidentiality, integrity, and availability of the orchestrator and data managed by the orchestrator.

Required action (CISA)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://www.arista.com/en/support/advisories-notices/security-advisory/24364-security-advisory-0144
• https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk
• https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk
• https://nvd.nist.gov/vuln/detail/CVE-2026-16812

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2026-07-27T16:17:03.640

Last modified

2026-10-24T13:10:00.147

Weaknesses

CWE-78

VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality and impact the VCO host. Successful exploitation may compromise the confidentiality, integrity, and availability of the orchestrator and data managed by the orchestrator.




This functionality was intended to be for internal use only and is not intended to be remotely accessible.




Hosted and Dedicated versions of VCO have already been patched in advance of this notice going out.




This issue was discovered externally and is known to be actively exploited.

References

• https://www.arista.com/en/support/advisories-notices/security-advisory/24364-security-advisory-0144 (Mitigation, Vendor Advisory)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-16812 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:31.494Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-16812

CVE record

Title (CNA)

VeloCloud Orchestrator OS Command Injection

Assigner

Arista

State

PUBLISHED

Published

2026-07-27T16:11:00.968Z

Updated

2026-07-28T03:56:40.567Z

Problem types

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

VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality and impact the VCO host. Successful exploitation may compromise the confidentiality, integrity, and availability of the orchestrator and data managed by the orchestrator.




This functionality was intended to be for internal use only and is not intended to be remotely accessible.




Hosted and Dedicated versions of VCO have already been patched in advance of this notice going out.




This issue was discovered externally and is known to be actively exploited.

References

• Security Advisory 0144

Read on 2026-11-03T02:18:42.741Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/16xxx/CVE-2026-16812.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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