VeloCloud Orchestrator Security Flaw Exposes Internal Functionality
CVE-2026-16812

10CRITICAL

Key Information:

Vendor

Arista Networks

Status
Velocloud Orchestrator On-prem
Vendor
CVE Published:
27 July 2026

Badges

👾 Exploit Exists🦅 CISA Reported📰 News Worthy

What is CVE-2026-16812?

The VeloCloud Orchestrator, designed for managing enterprise network services, has a security vulnerability that could facilitate unauthorized remote access to its internal functionalities. This concern stems from a design oversight, where certain features, meant solely for internal use, have become accessible externally. If successfully exploited, this vulnerability can compromise the confidentiality, integrity, and availability of sensitive data managed by the orchestrator. VMware has proactively addressed this issue, releasing patches for both hosted and dedicated versions prior to the vulnerability's public disclosure. It is important for users to ensure they are running the updated versions to mitigate the risk of exploitation.

CISA has reported CVE-2026-16812

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2026-16812 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: 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.

Affected Version(s)

VeloCloud Orchestrator On-Prem 5.2.0 < 5.2.3.14

VeloCloud Orchestrator On-Prem 6.1.0 < 6.1.3.4

VeloCloud Orchestrator On-Prem 6.4.0 < 6.4.2.4

News Articles

favicon imageTechtimes

Arista VeloCloud CVE-2026-16812: No Password Required to Own Your Enterprise WAN

CVE-2026-16812 lets unauthenticated attackers take full control of Arista VeloCloud Orchestrator On-Prem SD-WAN deployments. CISA confirmed active exploitation July 27, 2026 and set a July 30 federal

favicon imageThe Hacker News

Attackers Exploit Arista VeloCloud Orchestrator Command Injection Flaw

Hackers are exploiting CVE-2026-16812 in on-prem Arista VeloCloud Orchestrator, a command injection bug that may extend access to managed Edge devices

favicon imageBleepingComputer

Arista patches VeloCloud Orchestrator zero-day exploited in attacks

Arista has patched a maximum-severity command injection vulnerability in on-premises VeloCloud Orchestrator deployments that is being actively exploited in attacks.

References

https://www.arista.com/en/support/advisories-notices/secu...
vendor-advisory

CVSS V4

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • 📰

    First article discovered by BleepingComputer

  • Vulnerability published

  • Vulnerability Reserved

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