Security researchers today disclosed nine vulnerabilities affecting implementations of the Domain Name System protocol in popular TCP/IP network communication stacks. The flaws could be leveraged to take offline affected devices or to gain control over them. The vulnerabilities affect at least 100 million devices and run on a wide range of products, from high-performance servers and networking equipment to operational technology (OT) systems that monitor and control industrial equipment. The most severe of the vulnerabilities is remote code execution, with the highest severity score being calculated to 9.8 out of 10.
Source: https://www.bleepingcomputer.com/news/security/name-wreck-dns-vulnerabilities-affect-over-100-million-devices/