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CVE-2026-16812

Arista VeloCloud Orchestrator On-Prem OS Command Injection

10.0 CRITICALActively exploited (CISA KEV)EPSS 1.00%
  1. Published27 Jul 2026
  2. Added to CISA KEV27 Jul 2026
  3. Remediation due30 Jul 2026
Actively exploited (CISA KEV)

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.

Added to KEV: 27 Jul 2026Federal remediation due: 30 Jul 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Arista Velocloud Orchestrator≥ 5.2.0 < 5.2.3.14 · ≥ 6.1.0 < 6.1.3.4 · ≥ 6.4.0 < 6.4.2.4 · 7.0.0

Remediation

Fixed in
Arista Velocloud Orchestrator≥ 5.2.3.14

References

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Frequently asked

Is CVE-2026-16812 being actively exploited?

Yes. CVE-2026-16812 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 27 Jul 2026.

How severe is CVE-2026-16812?

CVE-2026-16812 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 1.00% probability of exploitation.

Which products are affected by CVE-2026-16812?

Affected products include Arista Velocloud Orchestrator.

How do I fix CVE-2026-16812?

Upgrade affected software to a fixed version, for example Arista Velocloud Orchestrator 5.2.3.14 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-16812 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.