Arista Networks MOS is a fully programmable and highly modular Linux-based network operating system from Arista Networks, Inc. that uses the familiar industry-standard CLI and runs a single binary software image in the Arista switch family. Arista Networks MOS is vulnerable to an access control error The Arista Networks MOS is vulnerable to an access control error, which could be exploited by an attacker to gain full access to the system by an unprivileged user.