CVE-2026-93952

Critical

Arista VeloCloud Orchestrator Improper Input Validation Vulnerability

10.0 CVSS v3.1 CVSS v4.0: 9.5

Published: Sep 22, 2026
Updated: Sep 23, 2026
Vendor: Arista
Affected versions: See affected products
Weakness: CWE-20

Summary

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.

Hosted, including Dedicated, versions of VCO were impacted and have already been patched.

Severity

Critical (10.0)

CVSS vector

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

CVSS v4.0 (9.5)

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

Arista Velocloud Orchestrator >= 5.2.0, < 5.2.3.16
Arista Velocloud Orchestrator >= 6.1.0, = 6.4.0, < 6.4.2.8
Arista Velocloud Orchestrator >= 7.0.0, <= 7.0.0.2

Exploitation status

Actively exploited

Listed in the CISA Known Exploited Vulnerabilities catalog on Sep 22, 2026. Federal remediation due: Sep 25, 2026.

Technical details

Technical analysis has not been written for this record yet.

Mitigation & remediation

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.