CVE-2026-51221

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A buffer overflow in the Get_Attribute_List function of EIPStackGroup OpENer commit 76b95c allows attackers to cause a Denial of Service (DoS) via supplying a crafted Common Packet Format (CPF) packet.

Published 2026-06-29. Last modified 2026-06-30.