CVE-2026-16812

Critical OS Command Injection Flaw in Arista VeloCloud Orchestrator Exploited in the Wild

Arista Networks has disclosed a critical vulnerability in the on-premises version of its VeloCloud Orchestrator product used for centralized SD-WAN management. The flaw, tracked as CVE-2026-16812, is an OS command injection issue that allows remote attackers to compromise the system without any authentication. Exploitation has already been confirmed, and the vulnerability carries the maximum CVSS base score of 10.0 in both version 4.0 and 3.1, classifying it as Critical. Successful attacks can impact the confidentiality, integrity, and availability of the orchestrator and all managed data. In addition, a compromised VeloCloud Orchestrator instance may grant attackers access to connected VeloCloud Edge devices across the network.

CISA Adds Exploited Flaws in FortiOS and VeloCloud Orchestrator to Known Exploited Vulnerabilities Catalog

The US Cybersecurity and Infrastructure Security Agency has added two actively exploited vulnerabilities to its Known Exploited Vulnerabilities catalog. CVE-2026-16812 affects the on-premises version of Arista VeloCloud Orchestrator and allows OS command injection that can lead to data leakage, tampering, and denial of service. The flaw carries a maximum CVSS v3.1 base score of 10.0 and is rated Critical. CVE-2025-68686 impacts Fortinet FortiOS and can be used to bypass specific patches and steal sensitive information when combined with another vulnerability that grants prior filesystem access. Federal agencies must remediate the VeloCloud issue by July 30 and the FortiOS issue by August 10.