CVE-2026-16812

CRITICAL CVSS 4.0: 10.0 EPSS 1.00% ACTIVE EXPLOIT
Updated Jul 28, 2026
Arista

CISA Known Exploited Vulnerability (KEV)

This vulnerability is actively exploited in the wild. Immediate patching is strongly recommended.

Due Date: Jul 30, 2026

Parameter Value
CVSS 10.0 (CRITICAL)
Affected Versions 5.2.0 — 6.4.2.4
Fixed In 5.2.3.14
Type CWE-78 (OS Command Injection)
Vendor Arista
Public PoC Yes

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. This functionality was intended to be for internal use only and is not intended to be remotely accessible.

Hosted and Dedicated versions of VCO have already been patched in advance of this notice going out. This issue was discovered externally and is known to be actively exploited.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 4

Configuration From (including) Up to (excluding)
Arista Velocloud_Orchestrator
cpe:2.3:a:arista:velocloud_orchestrator:*:*:*:*:*:*:*:*
5.2.0 5.2.3.14
Arista Velocloud_Orchestrator
cpe:2.3:a:arista:velocloud_orchestrator:*:*:*:*:*:*:*:*
6.1.0 6.1.3.4
Arista Velocloud_Orchestrator
cpe:2.3:a:arista:velocloud_orchestrator:*:*:*:*:*:*:*:*
6.4.0 6.4.2.4
Arista Velocloud_Orchestrator
cpe:2.3:a:arista:velocloud_orchestrator:7.0.0:*:*:*:*:*:*:*
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