CVE-2026-16812: Arista VeloCloud Orchestrator

What is CVE-2026-16812?

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.

CVSS10 NVD 3.1

SeverityCRITICAL

Exploitation In the wild In CISA KEV

Triage statusActive Exploit

ActionPatch immediately

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWECWE-78

NVD published2026-07-27

NVD last modified2026-07-27

Timeline

2026-07-27Published to the U.S. National Vulnerability Database (NVD)
2026-07-27Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
2026-07-30CISA federal remediation deadline (BOD 22-01)

CISA Known Exploited Vulnerability

Arista VeloCloud Orchestrator On-Prem OS Command Injection Vulnerability

Added to KEV2026-07-27

Federal patch deadline2026-07-30

Known ransomware useUnknown

Affected product

Arista VeloCloud Orchestrator

Remediation Steps

Apply the vendor security update for Arista VeloCloud Orchestrator as a priority.
Restrict network exposure of the affected service to trusted sources until patched.
Review logs and detections for indicators of exploitation.
Confirm fixed versions against the official vendor advisory before deploying.

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 4 of July 2026 (July 27 – August 2)

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🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.