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CVE-2026-16812

Arista VeloCloud Orchestrator On-Prem OS Command Injection Vulnerability

Arista VeloCloud Orchestrator 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.

CVSS Score
10
Critical
EPSS — Exploit Probability
1.6%
Riskier than 74% of all CVEs · checked 2026-09-08
Exploitation
Confirmed in the wild
KEV since 2026-07-27
Remediation
Patch available
Federal deadline 2026-07-30
CISA required action

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. Deadline for federal agencies: 2026-07-30.

NVD entry Vendor patch PoC / advisory CISA KEV

7 articles across 5 outlets · first covered Jul 27, 2026 · latest Aug 3, 2026

Coverage timeline

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