A DNS client stack-based buffer overflow in ipdnsc_decode_name() affects Wind River VxWorks 6.5 through 7. NOTE: This vulnerability only affects products that are no longer supported by the maintainer
https://www.tenable.com/cyber-exposure/2021-threat-landscape-retrospective
https://cert-portal.siemens.com/productcert/pdf/ssa-553445.pdf