CVE-2020-13530: Opener Project Opener

High severity, CVSS 7.5. EPSS: 2.1% chance of exploitation in the next 30 days.

A denial-of-service vulnerability exists in the Ethernet/IP server functionality of the EIP Stack Group OpENer 2.3 and development commit 8c73bf3. A large number of network requests in a small span of time can cause the running program to stop. An attacker can send a sequence of requests to trigger this vulnerability.

Affected products

Published 2020-12-11. Last modified 2026-06-17.