CVE-2026-16812

CRITICAL CISA KEV
Published Jul 27, 2026 Modified Jul 28, 2026 CWE-78

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.

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CVSS v3.1 Score

10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0088
Probability of exploitation
0.56%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild.

Added: Jul 27, 2026 Remediation due: Jul 30, 2026

Weakness Type (CWE)

CWE-78 OS Command Injection

Affected Products

Vendor Product
arista velocloud_orchestrator
arista velocloud_orchestrator
arista velocloud_orchestrator
arista velocloud_orchestrator

References

Frequently Asked Questions

What is CVE-2026-16812? +
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. It has a CVSS v3.1 base score of 10.0 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
How severe is CVE-2026-16812? +
CVE-2026-16812 has a CVSS v3.1 score of 10.0 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0088, placing it in the 1th percentile for exploitation probability.
What products are affected by CVE-2026-16812? +
CVE-2026-16812 affects products from arista, specifically: velocloud_orchestrator. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-16812? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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