Arista VeloCloud Orchestrator Improper Input Validation Vulnerability (CVE-2026-93952)
Severity: critical · Patch status: unknown · Since 2026-09-22 · CVE-2026-93952
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. CISA added CVE-2026-93952 to its Known Exploited Vulnerabilities catalog on Sep 22, 2026, which means attackers are exploiting it in the wild.
What to do
- 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.
- US federal agencies must remediate by Sep 25, 2026 (BOD 22-01); treat that as the outer limit.
Sources
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