Bugs discovered in Third-Party EtherNet/IP Protocol Stack | Team82

Claroty integrated the AFL fuzzer into the OpENer EtherNet/IP stack and used it to uncover five vulnerabilities—including CVE-2020-13556 (high-severity out-of-bounds write)—that allow crafted ENIP/CIP packets to cause denial-of-service, memory leaks, information disclosure, or remote code execution in affected devices; fixes and advisories were coordinated with the OpENer maintainers and ICS-CERT.