A denial-of-service vulnerability exists in the Ethernet/IP server functionality of Rockwell Automation RSLinx Classic 2.57.00.14 CPR 9 SR 3. A specially crafted network request can lead to a denial of service. An attacker can send a sequence of malicious packets to trigger this vulnerability.
https://www.cisa.gov/news-events/ics-advisories/icsa-26-167-02
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1184