CVE WatchSep 23, 2026

CVE-2026-93952

Arista VeloCloud Orchestrator Improper Input Validation Vulnerability

CVSS

10.0

Critical

EPSS

1.4%

p72

KEV

YES

Sep 22, 2026

Exploit Today

0-100

Published: Sep 22, 2026 · Last modified: Sep 23, 2026 · CWE-20

EPSS · 30d

1.1%EPSS · 30 days1.4%

2026-10-092026-11-06

KEV catalog record

Product

Arista / VeloCloud Orchestrator

Vulnerability

Arista VeloCloud Orchestrator Improper Input Validation Vulnerability

Added to KEV

Sep 22, 2026

Remediate by

Sep 25, 2026

Known ransomware use

Summary description

Arista VeloCloud Orchestrator (VCO) on-prem contains an improper input validation 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.

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.

Notes

https://www.arista.com/en/support/advisories-notices/security-advisory/24765-security-advisory-0183 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-93952

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

Official references

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