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CVE-2026-16812

CRITICAL
10.0 CISA KEVNVD

Summary

generated automatically from NVD data

VeloCloud Orchestrator (VCO) on-prem, from Arista, exposes privileged internal functionality that was meant for internal use only, and a remote attacker can reach it (CWE-78, OS command injection). Successful exploitation could affect the VCO host and compromise the confidentiality, integrity and availability of the orchestrator and its managed data. The flaw is rated CRITICAL with a CVSS v3.1 score of 10.0, is listed in the CISA KEV catalog as actively exploited, and Hosted and Dedicated VCO versions were already patched.

NVD 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.

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⚠️ Actively exploited — CISA KEV

This CVE was added to CISA's Known Exploited Vulnerabilities catalog on 2026-07-27. It is confirmed exploited in the wild and must be patched as a priority.

Remediation deadline (US federal agencies): 2026-07-30

EPSS · FIRST.org

1.0%probability of exploitation in the next 30 days

Higher than 62% of scored CVEs

EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-16, recomputed daily by FIRST.org.

In-depth analysis on cveo.tech

We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.

CVSS v3.1 Score

10.0
/ 10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Information

Published
27 juil. 2026
Updated
28 juil. 2026
Status
Analyzed
Source
psirt@arista.com

Affected products

arista velocloud orchestrator
Versions : 5.2.3.14, 6.1.3.4, 6.4.2.4, 7.0.0

Weaknesses (CWE)

CWE-78

Similar CVEs

Other vulnerabilities of type CWE-78

…

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