Critical

Arista patches new VeloCloud Orchestrator zero-day exploited in attacks

BleepingComputer

October 22, 2026 at 5:18 PM

Actively Exploited

Overview

Arista Networks has issued security updates to address a zero-day vulnerability in the VeloCloud Orchestrator (VCO) used for on-premises deployments. This vulnerability is currently being exploited in the wild, which raises significant concerns for organizations relying on this software. Attackers could potentially gain unauthorized access to sensitive data or disrupt network operations. Companies using VeloCloud Orchestrator should act quickly to implement the patches released by Arista to mitigate any risk. The situation emphasizes the importance of keeping software up to date and monitoring for vulnerabilities.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: VeloCloud Orchestrator (VCO) On-Prem deployments by Arista Networks
Action Required: Arista Networks has released security updates to patch the vulnerability.
Timeline: Newly disclosed

Original Article Summary

Arista Networks released security updates to patch an actively exploited zero-day vulnerability affecting VeloCloud Orchestrator (VCO) On-Prem deployments. [...]

Impact

VeloCloud Orchestrator (VCO) On-Prem deployments by Arista Networks

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Arista Networks has released security updates to patch the vulnerability. Users are advised to apply these updates immediately to protect their systems.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Zero-day, Vulnerability, Patch, and 1 more.

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