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CVE-2026-16812

10, critical Known exploited

Arista VeloCloud Orchestrator On-Prem OS Command Injection Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
10, critical critical CVSS v3.1
EPSS, next 30 days
1% higher than 62.1% of scored CVEs
Exploitation
Confirmed in the wild
Published
27 Jul 20262 months ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 27 Jul 2026. US federal agencies had to remediate by 30 Jul 2026, a deadline that has passed.

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.

Description

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.

Details

Vendor
Arista
Product
VeloCloud Orchestrator On-Prem
Weakness
CWE-78 (opens in a new tab)
Status
Analyzed
Updated
28 Jul 2026
Assigner
psirt@arista.com

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

References 2

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Arista CVEs

Every Arista CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-93952 Arista VeloCloud Orchestrator Improper Input Validation Vulnerability KEV EPSS 1% 10, critical
  • CVE-2026-7473 Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability KEV EPSS 0.6% 5.8, medium

Beyond this page

Is CVE-2026-16812 in your network?

This page tells you how dangerous CVE-2026-16812 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2026-16812 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-16812 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.