CVE-2026-16812

● Known-exploited CRITICAL

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 m...

Affects 0 products across 1 vendor.

CVSS 3.110.0
CVSS v410.0
EPSS1.0%
Percentile62th
PatchUnknown
Known-exploited since2026-07-27
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, can impact systems beyond the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-78: OS Command Injection

Attacker injects OS commands through application inputs passed to system() or equivalent calls, leading to arbitrary command execution.

Related Attack Patterns (CAPEC)
CAPEC-43 Exploiting Multiple Input Interpretation Layers
via CWE-78
CAPEC-108 Command Line Execution through SQL Injection
via CWE-78
CAPEC-6 Argument Injection
via CWE-78
CAPEC-15 Command Delimiters
via CWE-78
CAPEC-88 OS Command Injection
via CWE-78

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

A critical severity vulnerability (CVE-2026-16812) affects the target system. 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 ava...

Is this CVE in your environment?

BreachSpider monitors your ICS/OT environment for vulnerabilities like this one. No agents or network access required. Free to start.

Check My Environment →
Frequently Asked Questions
What is CVE-2026-16812?
A critical severity vulnerability (CVE-2026-16812) affects the target system. 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 ava...
What is the CVSS score for CVE-2026-16812?
CVE-2026-16812 has CVSS 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H. EPSS: 1.0%.
Is CVE-2026-16812 actively exploited?
Yes. CVE-2026-16812 is in the CISA known-exploited catalog (added 2026-07-27). Active exploitation confirmed. Immediate patching required.
How do I remediate CVE-2026-16812?
Advisory: https://www.arista.com/en/support/advisories-notices/security-advisory/24364-security-advisory-0144
What systems are affected by CVE-2026-16812?
CVE-2026-16812 affects Arista.
Vulnerability Details
CVE IDCVE-2026-16812
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published2026-07-27
Last Modified2026-07-28
ICS Relevance15%
Weakness (CWE)
OS Command Injection
SourceNVD
Official 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. 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.

Source: NIST NVD / MITRE CVE Database

Affected Products
VendorProductAffected Versions
Arista — —
Arista Velocloud Orchestrator 7.0.0 ≥ 5.2.0, < 5.2.3.14 ≥ 6.1.0, < 6.1.3.4 ≥ 6.4.0, < 6.4.2.4
Remediation
View Vendor Advisory →
Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 80 Days
CISA known-exploited● Active Exploitation Confirmed (added 2026-07-27)
Public ExploitNot confirmed
PoC CodeNot confirmed
Related CVEs affecting Arista
CVE-2024-11186 10.0 On affected versions of the CloudVision Portal, improper access controls coul... CVE-2026-93952 10.0 VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue ma... CVE-2025-0505 10.0 On Arista CloudVision systems (virtual or physical on-premise deployments), Z... CVE-2015-8236 10.0 Arista EOS before 4.11.12, 4.12 before 4.12.11, 4.13 before 4.13.14M, 4.14 be... CVE-2014-6271 9.8 GNU Bash through 4.3 processes trailing strings after function definitions in...
View all Arista CVEs →

This Vulnerability Is Being Actively Exploited

CVE-2026-16812 is on the CISA known-exploited list - confirmed active exploitation in the wild. BreachSpider flags known-exploited CVEs on the ICS assets they affect, with known-exploited status synced daily from CISA.

Create a free account →