CVE-2026-75347 [HIGH] – EIPStackGroup OpENer v2.3 and master up to commit 76b95cf contain an expired pointer deref

EIPStackGroup OpENer v2.3 and master up to commit 76b95cf contain an expired pointer dereference vulnerability in the EtherNet/IP Common Packet Format (CPF) handling logic. This allows a remote attacker to cause a denial of service.