As of June 16th 2020, a total of 19 vulnerabilities, collectively called Ripple20, were found within an embedded TCP/IP stack software library. This library, developed by Treck, Inc. was used in the manufacturing chain across all industries and could affect several hundred million devices.
Four vulnerabilities are considered critical and are tracked against CVE-2020-11896, CVE-2020-11897, CVE-2020-11898, and CVE-2020-11901. These four have a CVSS severity score greater than 9 and can lead to remote code execution if weaponized. It is recommended affected devices are updated to the latest Treck stack version 22.214.171.124 or greater.
There are at least 21 confirmed affected vendors including Aruba Networks, Cisco, Dell, Digi International, HP, Intel, as well as several OT device manufacturers, such as Rockwell Automation and Schneider Electric/APC.